Professor Cozmo's Discovery

Professor Cozmo's Discovery #90/107 was printed 2 ways and each one sells separately: Reverse Holofoil $19.19; Normal $0.56 (TCGplayer market, 2026-10-29). Check the set, the rarity mark and any parallel foil, manga art or edition stamp on your copy to know which price is yours; TickerMint prices every printing on its own page.

Shops and show vendors commonly offer about 70% of market in cash and 80% in store credit. At today's $19.19 market price that is roughly $13.43 cash or $15.35 trade for a near-mint copy. Selling it yourself on TCGplayer or eBay nets more after fees; see the seller-net answer below.

Professor Cozmo's Discovery [Reverse Holofoil] has a TCGplayer market price of $19.19 as of 2026-10-29. Non-holo copies are $0.56.

Professor Cozmo's Discovery #90/107 is trending up: $19.19 today, up 161% in 30 days and at its highest since we began tracking (2024-02-08), set 2026-10-18, and 19.4x its low of $0.99 (2024-11-14). TCGplayer market price as of 2026-10-29, tracked daily since 2024-02-08. Other windows: up 0.0% over 7 days, up 161.1% over 90 days, up 183.0% over a year. A 30-day rise this size usually follows a supply squeeze or a new format result; check the eBay book depth before buying in.

TickerMint began tracking Pokemon prices on 2024-02-08, after Professor Cozmo's Discovery came out, so these are the highest and lowest prices since we began tracking (2024-02-08), not all-time records. In TickerMint's daily data (since February 2024), the TCGplayer market price for Professor Cozmo's Discovery [Reverse Holofoil] (all conditions) peaked at $19.19 (2026-10-18) and bottomed at $0.99 (2024-11-14).