HoloHawk earns a commission on eBay purchases through this link. It never changes the price you pay.
Prices by grade
PSA 10 = 35.3× raw
Today's figures for every tier.
Raw · ungraded£120
PSA 10£4,237
PSA 9£822
CGC 10£218
BGS 10£5,508
A PSA 10 sells for 35.3× the raw card — a gap of £4,117. Grading fees and the risk of a 9 come out of that.
At a glance
30-day high£120
30-day low£89.08
Tracked high£125
Days tracked195
IllustratorNaoyo Kimura
Pokédex34
Price history
128 readings · 195d
HoloHawk awaiting data£120+34.8%PriceChartingPulseTCG awaiting data
19 Oct 2026PriceCharting£89.7120 Oct 2026PriceCharting£89.7121 Oct 2026PriceCharting£89.7122 Oct 2026PriceCharting£89.7123 Oct 2026PriceCharting£92.3924 Oct 2026PriceCharting£92.3925 Oct 2026PriceCharting£92.3926 Oct 2026PriceCharting£120
£90.00£100£110£120
19 Oct19 Oct19 Oct23 Oct23 Oct26 Oct
HoloHawk awaiting data£120+8.8%PriceChartingPulseTCG awaiting data
26 Sept 2026PriceCharting£11027 Sept 2026PriceCharting£11028 Sept 2026PriceCharting£11029 Sept 2026PriceCharting£10530 Sept 2026PriceCharting£1051 Oct 2026PriceCharting£1052 Oct 2026PriceCharting£96.323 Oct 2026PriceCharting£96.324 Oct 2026PriceCharting£96.325 Oct 2026PriceCharting£96.326 Oct 2026PriceCharting£96.327 Oct 2026PriceCharting£96.328 Oct 2026PriceCharting£96.329 Oct 2026PriceCharting£96.3210 Oct 2026PriceCharting£96.3211 Oct 2026PriceCharting£96.3212 Oct 2026PriceCharting£96.3213 Oct 2026PriceCharting£96.3214 Oct 2026PriceCharting£96.3215 Oct 2026PriceCharting£89.0816 Oct 2026PriceCharting£89.0817 Oct 2026PriceCharting£89.0818 Oct 2026PriceCharting£89.0819 Oct 2026PriceCharting£89.7120 Oct 2026PriceCharting£89.7121 Oct 2026PriceCharting£89.7122 Oct 2026PriceCharting£89.7123 Oct 2026PriceCharting£92.3924 Oct 2026PriceCharting£92.3925 Oct 2026PriceCharting£92.3926 Oct 2026PriceCharting£120
£90.00£100£110£120
26 Sept26 Sept2 Oct15 Oct23 Oct26 Oct
HoloHawk awaiting data£120+88.2%PriceChartingPulseTCG awaiting data
14 Apr 2026PriceCharting£63.7815 Apr 2026PriceCharting£63.7816 Apr 2026PriceCharting£63.7817 Apr 2026PriceCharting£63.7818 Apr 2026PriceCharting£63.7819 Apr 2026PriceCharting£62.6520 Apr 2026PriceCharting£62.6521 Apr 2026PriceCharting£62.6522 Apr 2026PriceCharting£62.9423 Apr 2026PriceCharting£62.9424 Apr 2026PriceCharting£62.9425 Apr 2026PriceCharting£77.8126 Apr 2026PriceCharting£77.8127 Apr 2026PriceCharting£77.8128 Apr 2026PriceCharting£85.0429 Apr 2026PriceCharting£85.0430 Apr 2026PriceCharting£85.041 May 2026PriceCharting£94.352 May 2026PriceCharting£94.353 May 2026PriceCharting£94.354 May 2026PriceCharting£88.785 May 2026PriceCharting£88.786 May 2026PriceCharting£88.787 May 2026PriceCharting£87.708 May 2026PriceCharting£87.709 May 2026PriceCharting£87.7010 May 2026PriceCharting£87.1511 May 2026PriceCharting£87.1512 May 2026PriceCharting£87.1513 May 2026PriceCharting£87.1514 May 2026PriceCharting£87.1515 May 2026PriceCharting£87.1516 May 2026PriceCharting£94.0317 May 2026PriceCharting£94.0318 May 2026PriceCharting£94.0319 May 2026PriceCharting£98.3320 May 2026PriceCharting£98.3321 May 2026PriceCharting£98.3322 May 2026PriceCharting£93.7923 May 2026PriceCharting£93.7924 May 2026PriceCharting£93.7925 May 2026PriceCharting£93.7926 May 2026PriceCharting£93.7927 May 2026PriceCharting£93.7928 May 2026PriceCharting£93.7929 May 2026PriceCharting£93.7930 May 2026PriceCharting£83.4331 May 2026PriceCharting£83.431 Jun 2026PriceCharting£83.052 Jun 2026PriceCharting£83.053 Jun 2026PriceCharting£83.054 Jun 2026PriceCharting£78.075 Jun 2026PriceCharting£78.076 Jun 2026PriceCharting£78.077 Jun 2026PriceCharting£90.968 Jun 2026PriceCharting£90.969 Jun 2026PriceCharting£90.9610 Jun 2026PriceCharting£90.9611 Jun 2026PriceCharting£97.7312 Jun 2026PriceCharting£97.7313 Jun 2026PriceCharting£78.5614 Jun 2026PriceCharting£78.5615 Jun 2026PriceCharting£78.5616 Jun 2026PriceCharting£96.8917 Jun 2026PriceCharting£96.8918 Jun 2026PriceCharting£96.8919 Jun 2026PriceCharting£96.8920 Jun 2026PriceCharting£99.5021 Jun 2026PriceCharting£99.5022 Jun 2026PriceCharting£99.5023 Jun 2026PriceCharting£99.5024 Jun 2026PriceCharting£99.5025 Jun 2026PriceCharting£10126 Jun 2026PriceCharting£10127 Jun 2026PriceCharting£10128 Jun 2026PriceCharting£10829 Jun 2026PriceCharting£10830 Jun 2026PriceCharting£1081 Jul 2026PriceCharting£1022 Jul 2026PriceCharting£1023 Jul 2026PriceCharting£1024 Jul 2026PriceCharting£1025 Jul 2026PriceCharting£1026 Jul 2026PriceCharting£1027 Jul 2026PriceCharting£1028 Jul 2026PriceCharting£1029 Jul 2026PriceCharting£10210 Jul 2026PriceCharting£11811 Jul 2026PriceCharting£11812 Jul 2026PriceCharting£11813 Jul 2026PriceCharting£12514 Jul 2026PriceCharting£12515 Jul 2026PriceCharting£12516 Jul 2026PriceCharting£12517 Jul 2026PriceCharting£10318 Jul 2026PriceCharting£10319 Jul 2026PriceCharting£10320 Jul 2026PriceCharting£10321 Jul 2026PriceCharting£10322 Jul 2026PriceCharting£10323 Jul 2026PriceCharting£10324 Jul 2026PriceCharting£10325 Jul 2026PriceCharting£10326 Jul 2026PriceCharting£10327 Jul 2026PriceCharting£94.9428 Jul 2026PriceCharting£94.9429 Jul 2026PriceCharting£95.0430 Jul 2026PriceCharting£95.0431 Jul 2026PriceCharting£95.041 Aug 2026PriceCharting£95.092 Aug 2026PriceCharting£95.093 Aug 2026PriceCharting£95.094 Aug 2026PriceCharting£93.525 Aug 2026PriceCharting£93.526 Aug 2026PriceCharting£93.527 Aug 2026PriceCharting£96.928 Aug 2026PriceCharting£96.929 Aug 2026PriceCharting£96.9210 Aug 2026PriceCharting£96.9211 Aug 2026PriceCharting£97.4012 Aug 2026PriceCharting£97.4013 Aug 2026PriceCharting£97.4014 Aug 2026PriceCharting£97.6415 Aug 2026PriceCharting£97.6416 Aug 2026PriceCharting£97.2817 Aug 2026PriceCharting£97.2818 Aug 2026PriceCharting£97.2819 Aug 2026PriceCharting£97.1120 Aug 2026PriceCharting£97.1121 Aug 2026PriceCharting£97.1122 Aug 2026PriceCharting£97.1123 Aug 2026PriceCharting£96.9224 Aug 2026PriceCharting£96.9225 Aug 2026PriceCharting£96.9226 Aug 2026PriceCharting£91.4527 Aug 2026PriceCharting£91.4528 Aug 2026PriceCharting£90.5829 Aug 2026PriceCharting£90.5830 Aug 2026PriceCharting£90.5831 Aug 2026PriceCharting£90.581 Sept 2026PriceCharting£90.582 Sept 2026PriceCharting£90.153 Sept 2026PriceCharting£90.154 Sept 2026PriceCharting£90.155 Sept 2026PriceCharting£90.156 Sept 2026PriceCharting£90.157 Sept 2026PriceCharting£90.158 Sept 2026PriceCharting£89.719 Sept 2026PriceCharting£89.7110 Sept 2026PriceCharting£89.7111 Sept 2026PriceCharting£89.7112 Sept 2026PriceCharting£95.1413 Sept 2026PriceCharting£95.1414 Sept 2026PriceCharting£95.1415 Sept 2026PriceCharting£95.1416 Sept 2026PriceCharting£95.1417 Sept 2026PriceCharting£95.1418 Sept 2026PriceCharting£95.1419 Sept 2026PriceCharting£95.1420 Sept 2026PriceCharting£95.1421 Sept 2026PriceCharting£95.1422 Sept 2026PriceCharting£11023 Sept 2026PriceCharting£11024 Sept 2026PriceCharting£11025 Sept 2026PriceCharting£11026 Sept 2026PriceCharting£11027 Sept 2026PriceCharting£11028 Sept 2026PriceCharting£11029 Sept 2026PriceCharting£10530 Sept 2026PriceCharting£1051 Oct 2026PriceCharting£1052 Oct 2026PriceCharting£96.323 Oct 2026PriceCharting£96.324 Oct 2026PriceCharting£96.325 Oct 2026PriceCharting£96.326 Oct 2026PriceCharting£96.327 Oct 2026PriceCharting£96.328 Oct 2026PriceCharting£96.329 Oct 2026PriceCharting£96.3210 Oct 2026PriceCharting£96.3211 Oct 2026PriceCharting£96.3212 Oct 2026PriceCharting£96.3213 Oct 2026PriceCharting£96.3214 Oct 2026PriceCharting£96.3215 Oct 2026PriceCharting£89.0816 Oct 2026PriceCharting£89.0817 Oct 2026PriceCharting£89.0818 Oct 2026PriceCharting£89.0819 Oct 2026PriceCharting£89.7120 Oct 2026PriceCharting£89.7121 Oct 2026PriceCharting£89.7122 Oct 2026PriceCharting£89.7123 Oct 2026PriceCharting£92.3924 Oct 2026PriceCharting£92.3925 Oct 2026PriceCharting£92.3926 Oct 2026PriceCharting£120
£80.00£100£120
14 Apr10 May9 Jun4 Jul30 Jul26 Oct
Three independent readings on one scale. A reading is recorded only when a price changes, so a flat stretch means it held. Hover or tap any day. HoloHawk and PulseTCG have no readings for this card yet.
14 Apr 2026PSA 10£60515 Apr 2026PSA 10£60516 Apr 2026PSA 10£60517 Apr 2026PSA 10£60518 Apr 2026PSA 10£60519 Apr 2026PSA 10£60520 Apr 2026PSA 10£60521 Apr 2026PSA 10£60522 Apr 2026PSA 10£60523 Apr 2026PSA 10£60524 Apr 2026PSA 10£60525 Apr 2026PSA 10£60526 Apr 2026PSA 10£60527 Apr 2026PSA 10£60528 Apr 2026PSA 10£60529 Apr 2026PSA 10£60530 Apr 2026PSA 10£6051 May 2026PSA 10£6052 May 2026PSA 10£6053 May 2026PSA 10£6054 May 2026PSA 10£6055 May 2026PSA 10£6056 May 2026PSA 10£6057 May 2026PSA 10£6058 May 2026PSA 10£6059 May 2026PSA 10£60510 May 2026PSA 10£60511 May 2026PSA 10£60512 May 2026PSA 10£60513 May 2026PSA 10£60514 May 2026PSA 10£60515 May 2026PSA 10£60516 May 2026PSA 10£60517 May 2026PSA 10£60518 May 2026PSA 10£60519 May 2026PSA 10£60520 May 2026PSA 10£60521 May 2026PSA 10£60522 May 2026PSA 10£1,09623 May 2026PSA 10£1,09624 May 2026PSA 10£1,09625 May 2026PSA 10£1,09626 May 2026PSA 10£1,09627 May 2026PSA 10£1,09628 May 2026PSA 10£1,09629 May 2026PSA 10£1,09630 May 2026PSA 10£1,09631 May 2026PSA 10£1,0961 Jun 2026PSA 10£1,0962 Jun 2026PSA 10£1,0963 Jun 2026PSA 10£1,0964 Jun 2026PSA 10£1,0965 Jun 2026PSA 10£1,0966 Jun 2026PSA 10£1,0967 Jun 2026PSA 10£1,0968 Jun 2026PSA 10£1,0969 Jun 2026PSA 10£1,09610 Jun 2026PSA 10£1,09611 Jun 2026PSA 10£1,09612 Jun 2026PSA 10£1,09613 Jun 2026PSA 10£1,09614 Jun 2026PSA 10£1,09615 Jun 2026PSA 10£1,09616 Jun 2026PSA 10£1,09617 Jun 2026PSA 10£1,09618 Jun 2026PSA 10£1,09619 Jun 2026PSA 10£1,09620 Jun 2026PSA 10£1,09621 Jun 2026PSA 10£1,09622 Jun 2026PSA 10£1,09623 Jun 2026PSA 10£1,09624 Jun 2026PSA 10£1,09625 Jun 2026PSA 10£1,05326 Jun 2026PSA 10£1,05327 Jun 2026PSA 10£1,05328 Jun 2026PSA 10£1,05329 Jun 2026PSA 10£1,05330 Jun 2026PSA 10£1,0531 Jul 2026PSA 10£1,0532 Jul 2026PSA 10£1,0533 Jul 2026PSA 10£1,0534 Jul 2026PSA 10£1,0535 Jul 2026PSA 10£1,0476 Jul 2026PSA 10£1,0477 Jul 2026PSA 10£1,0438 Jul 2026PSA 10£1,0439 Jul 2026PSA 10£1,04310 Jul 2026PSA 10£1,03911 Jul 2026PSA 10£1,03912 Jul 2026PSA 10£1,03913 Jul 2026PSA 10£1,04614 Jul 2026PSA 10£1,04615 Jul 2026PSA 10£1,04616 Jul 2026PSA 10£1,04617 Jul 2026PSA 10£1,05018 Jul 2026PSA 10£1,05019 Jul 2026PSA 10£1,05220 Jul 2026PSA 10£1,05221 Jul 2026PSA 10£1,05222 Jul 2026PSA 10£1,05223 Jul 2026PSA 10£1,05224 Jul 2026PSA 10£1,05225 Jul 2026PSA 10£1,05226 Jul 2026PSA 10£1,05227 Jul 2026PSA 10£1,05328 Jul 2026PSA 10£1,05329 Jul 2026PSA 10£1,05330 Jul 2026PSA 10£1,05331 Jul 2026PSA 10£1,0531 Aug 2026PSA 10£1,0532 Aug 2026PSA 10£1,0533 Aug 2026PSA 10£1,0534 Aug 2026PSA 10£2,010PSA 9£406CGC 10£210BGS 10£2,6135 Aug 2026PSA 10£2,010PSA 9£406CGC 10£210BGS 10£2,6136 Aug 2026PSA 10£2,010PSA 9£406CGC 10£210BGS 10£2,6137 Aug 2026PSA 10£2,038PSA 9£456CGC 10£210BGS 10£2,6498 Aug 2026PSA 10£2,038PSA 9£456CGC 10£210BGS 10£2,6499 Aug 2026PSA 10£2,038PSA 9£456CGC 10£210BGS 10£2,64910 Aug 2026PSA 10£2,038PSA 9£456CGC 10£210BGS 10£2,64911 Aug 2026PSA 10£2,326PSA 9£457CGC 10£210BGS 10£3,02412 Aug 2026PSA 10£2,326PSA 9£457CGC 10£210BGS 10£3,02413 Aug 2026PSA 10£2,326PSA 9£457CGC 10£210BGS 10£3,02414 Aug 2026PSA 10£2,326PSA 9£445CGC 10£210BGS 10£3,02415 Aug 2026PSA 10£2,326PSA 9£445CGC 10£210BGS 10£3,02416 Aug 2026PSA 10£2,326PSA 9£439CGC 10£210BGS 10£3,02417 Aug 2026PSA 10£2,326PSA 9£439CGC 10£210BGS 10£3,02418 Aug 2026PSA 10£2,326PSA 9£439CGC 10£210BGS 10£3,02419 Aug 2026PSA 10£2,345PSA 9£432CGC 10£210BGS 10£3,04820 Aug 2026PSA 10£2,345PSA 9£432CGC 10£210BGS 10£3,04821 Aug 2026PSA 10£2,345PSA 9£432CGC 10£210BGS 10£3,04822 Aug 2026PSA 10£2,345PSA 9£432CGC 10£210BGS 10£3,04823 Aug 2026PSA 10£2,345PSA 9£421CGC 10£210BGS 10£3,04824 Aug 2026PSA 10£2,345PSA 9£421CGC 10£210BGS 10£3,04825 Aug 2026PSA 10£2,345PSA 9£421CGC 10£210BGS 10£3,04826 Aug 2026PSA 10£2,345PSA 9£420CGC 10£210BGS 10£3,04827 Aug 2026PSA 10£2,345PSA 9£420CGC 10£210BGS 10£3,04828 Aug 2026PSA 10£2,345PSA 9£419CGC 10£214BGS 10£3,04829 Aug 2026PSA 10£2,345PSA 9£419CGC 10£214BGS 10£3,04830 Aug 2026PSA 10£2,345PSA 9£419CGC 10£214BGS 10£3,04831 Aug 2026PSA 10£2,345PSA 9£419CGC 10£214BGS 10£3,0481 Sept 2026PSA 10£2,345PSA 9£419CGC 10£214BGS 10£3,0482 Sept 2026PSA 10£2,345PSA 9£419CGC 10£215BGS 10£3,0483 Sept 2026PSA 10£2,345PSA 9£419CGC 10£215BGS 10£3,0484 Sept 2026PSA 10£2,345PSA 9£419CGC 10£215BGS 10£3,0485 Sept 2026PSA 10£2,345PSA 9£419CGC 10£215BGS 10£3,0486 Sept 2026PSA 10£2,345PSA 9£419CGC 10£215BGS 10£3,0487 Sept 2026PSA 10£2,345PSA 9£419CGC 10£215BGS 10£3,0488 Sept 2026PSA 10£2,345PSA 9£417CGC 10£216BGS 10£3,0489 Sept 2026PSA 10£2,345PSA 9£417CGC 10£216BGS 10£3,04810 Sept 2026PSA 10£2,345PSA 9£417CGC 10£216BGS 10£3,04811 Sept 2026PSA 10£2,345PSA 9£417CGC 10£216BGS 10£3,04812 Sept 2026PSA 10£2,345PSA 9£438CGC 10£217BGS 10£3,04813 Sept 2026PSA 10£2,345PSA 9£438CGC 10£217BGS 10£3,04814 Sept 2026PSA 10£2,345PSA 9£438CGC 10£217BGS 10£3,04815 Sept 2026PSA 10£2,345PSA 9£438CGC 10£217BGS 10£3,04816 Sept 2026PSA 10£2,345PSA 9£473CGC 10£217BGS 10£3,04817 Sept 2026PSA 10£2,345PSA 9£473CGC 10£217BGS 10£3,04818 Sept 2026PSA 10£2,345PSA 9£473CGC 10£217BGS 10£3,04819 Sept 2026PSA 10£2,345PSA 9£473CGC 10£217BGS 10£3,04820 Sept 2026PSA 10£2,345PSA 9£473CGC 10£217BGS 10£3,04821 Sept 2026PSA 10£2,345PSA 9£473CGC 10£217BGS 10£3,04822 Sept 2026PSA 10£2,345PSA 9£505CGC 10£217BGS 10£3,04823 Sept 2026PSA 10£2,345PSA 9£505CGC 10£217BGS 10£3,04824 Sept 2026PSA 10£2,345PSA 9£505CGC 10£217BGS 10£3,04825 Sept 2026PSA 10£2,345PSA 9£505CGC 10£217BGS 10£3,04826 Sept 2026PSA 10£2,401PSA 9£505CGC 10£217BGS 10£3,12127 Sept 2026PSA 10£2,401PSA 9£505CGC 10£217BGS 10£3,12128 Sept 2026PSA 10£2,401PSA 9£505CGC 10£217BGS 10£3,12129 Sept 2026PSA 10£2,401PSA 9£435CGC 10£218BGS 10£3,12130 Sept 2026PSA 10£2,401PSA 9£435CGC 10£218BGS 10£3,1211 Oct 2026PSA 10£2,401PSA 9£435CGC 10£218BGS 10£3,1212 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2393 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2394 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2395 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2396 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2397 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2398 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,2399 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,23910 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,23911 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,23912 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,23913 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,23914 Oct 2026PSA 10£2,492PSA 9£497CGC 10£218BGS 10£3,23915 Oct 2026PSA 10£2,673PSA 9£510CGC 10£218BGS 10£3,47516 Oct 2026PSA 10£2,673PSA 9£510CGC 10£218BGS 10£3,47517 Oct 2026PSA 10£2,673PSA 9£510CGC 10£218BGS 10£3,47518 Oct 2026PSA 10£2,673PSA 9£510CGC 10£218BGS 10£3,47519 Oct 2026PSA 10£4,095PSA 9£544CGC 10£218BGS 10£5,32320 Oct 2026PSA 10£4,095PSA 9£544CGC 10£218BGS 10£5,32321 Oct 2026PSA 10£4,095PSA 9£544CGC 10£218BGS 10£5,32322 Oct 2026PSA 10£4,095PSA 9£544CGC 10£218BGS 10£5,32323 Oct 2026PSA 10£4,237PSA 9£544CGC 10£218BGS 10£5,50824 Oct 2026PSA 10£4,237PSA 9£544CGC 10£218BGS 10£5,50825 Oct 2026PSA 10£4,237PSA 9£544CGC 10£218BGS 10£5,50826 Oct 2026PSA 10£4,237PSA 9£822CGC 10£218BGS 10£5,508
£2,000£4,000
14 Apr10 May9 Jun4 Jul30 Jul26 Oct
Graded prices from PriceCharting, in GBP. PSA 10 has been tracked since April 2026; the other tiers began recording 3 August 2026 and join the chart as their history builds.
New listings per day
Building
How much new stock hits the UK market each day The scanner records every new UK listing it sees — around 13,600 a day. This charts how many appear for this card once the daily rollup has readings for it.
A direct count of listings we saw appear — not an estimate of every listing on eBay.
Confirmed sales per day
Building
How often this card actually sells We record roughly 4,600 UK auction outcomes a day across the catalogue. This charts how many close with a winning bid, day by day, from the first confirmed sale for this card.
Only auctions that finished with a bid count. A listing vanishing is not proof of a sale, so it is not counted as one.
Recent confirmed sales
Recording live
No confirmed sales for this card yet
We log every UK auction that closes with a winning bid — around 4,600 a day across the catalogue.
The first result for this card appears here as soon as one sells.
On sale now in the UK
Building
Live UK listings for this card The scanner records every new UK listing it sees — around 13,600 a day. This fills as soon as one appears for this card, showing asking prices cheapest first.
Where these numbers come from
Three independent readings, shown side by side rather than blended into one figure:
HoloHawkOur own market price, from live UK listings
PriceChartingPublished reference price, USD converted to GBP
PulseTCGPublished reference price, natively GBP
A reading is stored only when a price actually changes, so flat
stretches mean the price held — not that data is missing. Where a source has no history for an item its
line is absent rather than flat. Confirmed sales are UK auctions that closed with a winning bid, observed
within three minutes of close, so each is a lower bound. Live listings are asking prices, not sales.
Supply and sales counts are direct observations — listings we saw appear and auctions we saw close with a
bid. We do not infer that a listing sold because it disappeared, so nothing here depends on that guess.