Base Set

Highest value first. Raw = ungraded, near mint. A dash means no second reading yet.

Card	Rarity	Raw	1D	30D	Trend	PSA 10
Weedle 69 1999-2000	Common	£1.66	0.0%	0.0%		£43.50
Staryu 65 1999-2000	Common	£1.65	-0.4%	-2.2%		£52.10
Tangela 66 Shadowless	Common	£1.61	0.0%	-13.8%		£103
Dratini 26	Uncommon	£1.60	-0.5%	+1.9%		£138
Revive 89	Uncommon	£1.60	-10.0%	-6.1%		£395
PlusPower 84 Shadowless	Uncommon	£1.60	-11.5%	+5.4%		£67.95
Grass Energy 99 Shadowless	—	£1.57	+1.4%	+19.0%		£45.05
Doduo 48 1999-2000	Common	£1.57	-1.4%	+3.9%		£62.52
Kadabra 32	Uncommon	£1.56	+5.5%	+6.6%		£170
Magmar 36	Uncommon	£1.55	0.0%	-5.8%		£119
Drowzee 49 Shadowless	Common	£1.55	-4.1%	-37.5%		£132
Defender 80	Uncommon	£1.54	+5.0%	+5.0%		£248
Voltorb 67	Common	£1.51	0.0%	-13.9%		£148
Psychic Energy 101 Shadowless	—	£1.51	0.0%	-13.9%		£67.95
Raticate 40	Uncommon	£1.50	0.0%	-4.2%		£118
Porygon 39	Uncommon	£1.48	+0.5%	-31.4%		£139
Pokemon Center 85	Uncommon	£1.48	+2.6%	-2.4%		£443
Diglett 47 1999-2000	Common	£1.48	-20.0%	-33.1%		£86.05
Super Potion 90 1999-2000	Uncommon	£1.48	-8.3%	-7.8%		£41.76
Sandshrew 62	Common	£1.47	+11.2%	+19.2%		£126
Lightning Energy 100 Shadowless	—	£1.47	0.0%	+5.9%		£77.00
Gust of Wind 93 1999-2000	Common	£1.47	0.0%	+0.5%		£46.78
Full Heal 82	Uncommon	£1.45	+4.8%	+3.2%		£237
Switch 95 1999-2000	Common	£1.45	0.0%	+20.2%		£54.19
Charmeleon 24	Uncommon	£1.43	-6.3%	-12.3%		£167
Machop 52 Shadowless	Common	£1.43	-0.5%	-11.4%		£107
Fire Energy 98 Shadowless	—	£1.43	+2.1%	-2.0%		£55.40
Ivysaur 30	Uncommon	£1.41	-50.4%	-40.1%		£177
Haunter 29	Uncommon	£1.39	-3.6%	-14.9%		£132
Rattata 61 Shadowless	Common	£1.39	+1.1%	-37.3%		£78.19
Energy Removal 92 Shadowless	Common	£1.36	0.0%	+1.7%		£64.69
Potion 94 Shadowless	Common	£1.34	0.0%	-20.2%		£58.81
Defender 80 1999-2000	Uncommon	£1.32	0.0%	-8.7%		£46.65
Kakuna 33	Uncommon	£1.30	0.0%	-12.0%		£71.59
Dewgong 25	Uncommon	£1.29	-12.1%	-33.0%		£161
Poliwhirl 38	Uncommon	£1.28	+4.2%	-4.4%		£115
Bill 91 1999-2000	Common	£1.26	0.0%	+6.9%		£56.88
Professor Oak 88	Uncommon	£1.20	-9.5%	-18.6%		£96.01
Pidgey 57	Common	£1.18	-13.5%	-20.0%		£70.91
Seel 41	Uncommon	£1.17	0.0%	+6.0%		£81.23
Staryu 65 Shadowless	Common	£1.16	+4.7%	-21.1%		£110
Ponyta 60 Shadowless	Common	£1.15	0.0%	-36.6%		£142
Farfetch'd 27	Uncommon	£1.11	0.0%	-31.2%		£111
Abra 43	Common	£1.10	0.0%	-14.9%		£105
Tangela 66	Common	£1.10	+7.2%	+15.5%		£77.98
Doduo 48	Common	£1.09	0.0%	+6.5%		£77.24
Energy Retrieval 81	Uncommon	£1.06	+44.0%	-3.4%		£85.83
Rattata 61	Common	£1.03	0.0%	-14.7%		£62.78
Growlithe 28	Uncommon	£1.01	-8.7%	-25.9%		£90.48
Caterpie 45	Common	£1.00	-2.9%	-31.1%		£73.86
Machoke 34	Uncommon	£0.99	0.0%	-26.4%		£104
Diglett 47 Shadowless	Common	£0.98	0.0%	-33.5%		£101
Gust of Wind 93 Shadowless	Common	£0.97	-1.5%	-38.9%		£63.52
Energy Removal 92	Common	£0.94	0.0%	-15.3%		£48.01
Starmie 64	Common	£0.93	-16.0%	-28.4%		£78.85
Jynx 31	Uncommon	£0.92	0.0%	-29.4%		£97.86
Diglett 47	Common	£0.92	-8.1%	-25.7%		£71.64
Drowzee 49	Common	£0.92	-1.6%	-1.6%		£89.81
Onix 56	Common	£0.86	-6.4%	-9.3%		£80.87
Poliwag 59	Common	£0.80	-35.7%	-21.2%		£76.03

Which rarities carry this set's value. Share is the tier's raw cards as a fraction of the whole set. The PSA 10 premium is the median multiple over raw within the tier — cards under £5 raw are excluded from it, and a tier with fewer than three qualifying cards shows no premium rather than a misleading one.