Base Set

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

Card	Rarity	Raw	1D	Since tracked	Trend	PSA 10
Maintenance 83	Uncommon	$1.50	0.0%	0.0%		$552
Koffing 51 Shadowless	Common	$1.50	-25.0%	-9.1%		$338
Sandshrew 62 Shadowless	Common	$1.50	+13.6%	+16.3%		$232
Weedle 69 Shadowless	Common	$1.50	+51.5%	+51.5%		$159
Nidorino 37	Uncommon	$1.49	+15.5%	-0.7%		$335
Seel 41	Uncommon	$1.49	+0.7%	+50.5%		$103
Wartortle 42	Uncommon	$1.49	0.0%	-5.7%		$309
Full Heal 82	Uncommon	$1.49	0.0%	-3.9%		$321
Doduo 48 Shadowless	Common	$1.49	+4.2%	+4.2%		$140
Energy Retrieval 81 Shadowless	Uncommon	$1.49	+2.8%	+7.2%		$68.74
Voltorb 67	Common	$1.48	+6.5%	+33.3%		$235
Vulpix 68	Common	$1.48	0.0%	-0.7%		$140
Drowzee 49	Common	$1.42	+11.8%	-1.4%		$150
Ivysaur 30	Uncommon	$1.39	-6.7%	-7.3%		$300
Koffing 51	Common	$1.39	0.0%	+15.8%		$130
Nidoran 55	Common	$1.39	+26.4%	+31.1%		$107
Rattata 61	Common	$1.39	+3.0%	+14.9%		$110
Energy Retrieval 81	Uncommon	$1.39	-0.7%	-6.7%		$150
Diglett 47	Common	$1.38	+21.1%	+21.1%		$110
Magnemite 53 Shadowless	Common	$1.37	-8.1%	+1.5%		$158
Switch 95 Shadowless	Common	$1.35	+2.3%	+5.5%		$86.00
Tangela 66	Common	$1.32	+1.5%	-0.8%		$120
Weedle 69	Common	$1.31	-5.8%	-12.1%		$138
Dewgong 25	Uncommon	$1.29	+29.0%	+25.2%		$237
Abra 43	Common	$1.29	-4.4%	0.0%		$185
Magnemite 53	Common	$1.29	0.0%	0.0%		$109
Poliwag 59	Common	$1.29	+3.2%	+30.3%		$110
Pokemon Flute 86	Uncommon	$1.29	-40.3%	+3.2%		$428
Pokedex 87	Uncommon	$1.28	-0.8%	-1.5%		$130
Revive 89	Uncommon	$1.23	-1.6%	-3.1%		$535
Machop 52 Shadowless	Common	$1.23	-12.8%	+23.0%		$146
Grass Energy 99 Shadowless	—	$1.23	+23.0%	+23.0%		$61.00
Poliwhirl 38	Uncommon	$1.22	0.0%	-6.9%		$178
Starmie 64	Common	$1.22	0.0%	-0.8%		$135
Onix 56	Common	$1.21	-3.2%	+14.2%		$145
Rattata 61 Shadowless	Common	$1.21	0.0%	-9.0%		$129
Machop 52	Common	$1.20	0.0%	+4.3%		$123
Growlithe 28	Uncommon	$1.19	+20.2%	+20.2%		$183
Magmar 36	Uncommon	$1.19	0.0%	+10.2%		$230
Switch 95	Common	$1.19	+19.0%	-7.8%		$99.99
Ponyta 60	Common	$1.18	-5.6%	-2.5%		$150
Nidoran 55 Shadowless	Common	$1.18	0.0%	0.0%		$110
Bill 91	Common	$1.17	0.0%	+18.2%		$113
Diglett 47 Shadowless	Common	$1.17	+18.2%	+18.2%		$180
Machoke 34 Shadowless	Uncommon	$1.16	-24.2%	-26.1%		$254
Staryu 65	Common	$1.14	-6.6%	+15.2%		$98.70
Sandshrew 62	Common	$1.13	-12.4%	-12.4%		$175
Professor Oak 88	Uncommon	$1.11	-3.5%	+11.0%		$155
Fighting Energy 97 Shadowless	—	$1.10	0.0%	0.0%		$54.00
Charmeleon 24	Uncommon	$1.07	+1.9%	-18.9%		$259
Machoke 34	Uncommon	$1.05	-32.7%	-17.3%		$141
Water Energy 102 Shadowless	—	$1.05	+1.0%	+1.0%		$74.25
Arcanine 23	Uncommon	$1.00	0.0%	-32.9%		$400
Kadabra 32	Uncommon	$1.00	+1.0%	0.0%		$252
Porygon 39	Uncommon	$1.00	0.0%	-20.0%		$193
Bulbasaur 44	Common	$1.00	0.0%	-20.0%		$358
Squirtle 63	Common	$1.00	0.0%	-30.1%		$434
Fire Energy 98	—	$1.00	0.0%	+1.0%		$101
Ponyta 60 Shadowless	Common	$1.00	-12.3%	-31.5%		$200
Staryu 65 Shadowless	Common	$1.00	0.0%	0.0%		$168

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.