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Mewtwo & Mew Black Star Promo SM191 PSA 10 GameStop vs eBay
Mewtwo & Mew Black Star Promo SM191 PSA 10 Pokemon graded card is sold out with GameStop price $1,887, GameStop inventory 0, eBay comps average $3,345, PSA population 9,784, set SM Black Star Promos.
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SlabStop tracks GameStop graded card listings, inventory movement, eBay sold comps, raw card references, and PSA population signals. Prices and inventory can change quickly; always verify on the linked marketplace before buying.
Price and Inventory History
GameStop price$1,887
Pro price estimate$1,793
Inventory0
Price change+0.0%
Inventory change-100.0%
eBay average$3,345
Raw price$155
GS/eBay ratio0.6x
Raw multiplier12.2x
Expected multiplier2.0x
PSA population9,784
Total PSA graded19,595
Gem rate49.9%
Pressure score0/100
3-day drop rate0.0%
7-day drop rate0.0%