Base Set

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

Card	Rarity	Raw	1D	30D	Trend	PSA 10
Charmeleon 24 1999-2000	Uncommon	£2.42	+0.6%	-1.2%		£137
Koffing 51 1999-2000	Common	£2.41	0.0%	-0.6%		£71.85
Double Colorless Energy 96	Uncommon	£2.36	+0.6%	-11.6%		£535
Full Heal 82 1999-2000	Uncommon	£2.36	0.0%	-57.1%		£130
Defender 80 Shadowless	Uncommon	£2.34	-9.2%	+4.6%		£123
PlusPower 84 1999-2000	Uncommon	£2.33	0.0%	+2.3%		£57.22
Abra 43 1999-2000	Common	£2.31	0.0%	-14.0%		£128
Lass 75	Rare	£2.26	-6.7%	-10.3%		£79.77
Bill 91 Shadowless	Common	£2.25	+0.7%	+16.0%		£81.25
Grass Energy 99 1999-2000	—	£2.24	+0.3%	+0.7%		£81.65
Arcanine 23	Uncommon	£2.22	+16.7%	-4.5%		£277
Wartortle 42	Uncommon	£2.21	-6.3%	+3.5%		£199
Squirtle 63	Common	£2.21	+25.1%	-9.1%		£299
Computer Search 71	Rare	£2.21	-3.5%	-9.4%		£65.03
Poliwag 59 Shadowless	Common	£2.21	0.0%	+17.3%		£119
Pokedex 87 Shadowless	Uncommon	£2.21	0.0%	0.0%		£129
Machoke 34 1999-2000	Uncommon	£2.21	0.0%	-53.5%		£72.72
Magmar 36 1999-2000	Uncommon	£2.21	0.0%	-24.5%		£88.63
Tangela 66 1999-2000	Common	£2.21	0.0%	+100.7%		£62.85
Fire Energy 98 1999-2000	—	£2.21	+35.3%	+33.5%		£69.88
Starmie 64 Shadowless	Common	£2.17	+0.3%	-0.3%		£116
Sandshrew 62 Shadowless	Common	£2.16	-1.4%	+30.4%		£183
Psychic Energy 101 1999-2000	—	£2.16	0.0%	+2.4%		—
Energy Removal 92 1999-2000	Common	£2.13	+6.3%	-1.4%		£56.88
Voltorb 67 1999-2000	Common	£2.10	0.0%	0.0%		£111
Pokemon Flute 86	Uncommon	£2.09	+2.9%	-4.7%		£321
Pokemon Center 85 Shadowless	Uncommon	£2.04	0.0%	+11.3%		£240
Nidoran 55 1999-2000	Common	£2.01	0.0%	+1.5%		£47.27
Water Energy 102 1999-2000	—	£1.99	-5.6%	-5.6%		£37.81
Full Heal 82 Shadowless	Uncommon	£1.98	0.0%	+8.1%		£152
Magnemite 53 1999-2000	Common	£1.98	0.0%	+12.1%		£51.69
Energy Retrieval 81 Shadowless	Uncommon	£1.97	-0.7%	+19.2%		£48.30
Poliwhirl 38 1999-2000	Uncommon	£1.96	-5.0%	-10.2%		£83.50
Maintenance 83	Uncommon	£1.94	+5.2%	-5.4%		£410
Seel 41 1999-2000	Uncommon	£1.94	0.0%	-16.0%		£172
Fighting Energy 97 1999-2000	—	£1.92	0.0%	0.0%		£54.69
Nidoran 55 Shadowless	Common	£1.91	+0.8%	-6.5%		£74.97
Kakuna 33 1999-2000	Uncommon	£1.91	+3.6%	+4.5%		£59.87
Starmie 64 1999-2000	Common	£1.91	-0.4%	-1.5%		£88.60
Onix 56 1999-2000	Common	£1.90	0.0%	-2.3%		£117
Kakuna 33 Shadowless	Uncommon	£1.88	-4.5%	-8.6%		£99.34
Voltorb 67	Common	£1.85	+22.5%	-12.3%		£148
Onix 56 Shadowless	Common	£1.85	0.0%	-16.1%		£133
Super Potion 90 Trainer Deck A	Uncommon	£1.84	0.0%	0.0%		£79.40
Magmar 36	Uncommon	£1.83	+18.1%	+8.3%		£119
Poliwag 59 1999-2000	Common	£1.80	-17.3%	-17.3%		£59.59
Doduo 48 Shadowless	Common	£1.78	-3.2%	0.0%		£97.99
Nidorino 37	Uncommon	£1.75	+5.3%	-0.8%		£194
Potion 94 1999-2000	Common	£1.75	-0.4%	-4.8%		£56.27
Lightning Energy 100 1999-2000	—	£1.75	+34.7%	+34.7%		£48.04
Switch 95 Shadowless	Common	£1.74	-0.8%	+18.6%		£73.85
Drowzee 49 1999-2000	Common	£1.74	+0.9%	+21.6%		£96.49
Rattata 61 1999-2000	Common	£1.74	+13.5%	+17.5%		£79.44
Magikarp 35	Uncommon	£1.73	0.0%	-6.4%		£264
Weedle 69 Shadowless	Common	£1.71	+3.1%	-22.7%		£90.79
Water Energy 102 Shadowless	—	£1.71	-0.4%	-7.9%		£54.78
Fighting Energy 97 Shadowless	—	£1.71	+5.0%	+19.6%		£47.64
Raticate 40	Uncommon	£1.70	+13.3%	+8.5%		£118
Magnemite 53 Shadowless	Common	£1.70	0.0%	-14.5%		£92.33
Defender 80	Uncommon	£1.69	+9.6%	+8.0%		£248

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.