| TCGplayer market | $15.06 | verify ↗ |
| TCGplayer lowest ask | $9.98 |
Shops and show vendors commonly offer about 70% of market in cash and 80% in store credit. At today's $15.06 market price that is roughly $10.54 cash or $12.05 trade for a near-mint copy. Selling it yourself on TCGplayer or eBay nets more after fees; see the seller-net answer below.
Unlocking the Development Diagram (C+) [Holofoil] has a TCGplayer market price of $15.06 as of 2026-09-17.
Unlocking the Development Diagram (C+) [Holofoil] is up 0.0% over 7 days, up 0.7% over 30 days (TCGplayer market price, as of 2026-09-17). The 30-day move is inside normal noise for a raw single.
In TickerMint's daily data (since February 2025), the all-time high market price for Unlocking the Development Diagram (C+) [Holofoil] is $15.42 (2026-08-09) and the all-time low is $12.44 (2026-07-04).
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The TickerMint Estimate for Unlocking the Development Diagram (C+) is $15.06. It is a fee-adjusted fair value blending TCGplayer and eBay data to estimate what a seller nets after marketplace fees.