Base Set 2

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

Card	Rarity	Raw	1D	30D	Trend	PSA 10
Poliwag 88	Common	£0.50	-12.8%	-11.7%		£24.06
Voltorb 98	Common	£0.50	-4.2%	-40.9%		£103
Goldeen 76	Common	£0.49	-8.2%	-10.7%		£55.39
Sandshrew 91	Common	£0.49	-14.1%	-55.3%		£43.13
Weedle 100	Common	£0.47	+3.2%	-16.9%		£48.75
Super Potion 117	Uncommon	£0.42	-9.5%	+14.0%		£14.01
Bellsprout 66	Common	£0.40	0.0%	-12.9%		£31.03
Energy Retrieval 110	Uncommon	£0.39	+1.9%	-58.3%		£38.24
Staryu 95	Common	£0.37	-2.0%	-35.9%		£44.31
Lightning Energy 128	—	£0.37	-28.6%	0.0%		£21.42
Psychic Energy 129	—	£0.36	0.0%	-2.0%		£41.36
Bill 118	Common	£0.34	+15.0%	-2.1%		£29.37
Potion 122	Common	£0.30	-42.0%	+33.3%		£32.60
Grass Energy 127	—	£0.30	0.0%	-20.0%		£36.93
Water Energy 130	—	£0.30	+14.3%	+5.3%		£33.11
POPsych Out Theme Deck With Acrylic Case	—	—	—	—		—
RRaichu 16 Prerelease	—	—	—	—		—
HWHot Water Theme Deck	—	—	—	—		—
LBLightning Bug Theme Deck	—	—	—	—		—

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.