What this is
How eBay sold prices compare with TCGplayer prices for the same booster boxes in 2026: within about 3% below to 9% above.
How it’s built
- Pitch Black, August 2026: eBay $180–185 against TCGplayer's $179 average and 'around $190'.
- Chaos Rising: eBay $240–250 at release against TCGplayer's June average of $229.89.
- Destined Rivals, late October 2026: eBay median $375 against TCGplayer's $385–386.
- eBay figures from trade-press reports and eBay sales; TCGplayer figures from its market prices.
What we assumed
- The time windows are close enough to compare.Chaos Rising compares launch week with a June average, which flatters eBay; the other two are matched in time.
Sanity check
No gap reaches 10%, so eBay readings can sit on the same scale as TCGplayer's prices within a few per cent.
Where it comes from
Our calculation from other figures in the trainer’s notes.
Show the working
- 180/179.03-1=+0.5%, 185/190-1=-2.6%
- 240/229.89-1=+4.4%, 250/229.89-1=+8.7% (different windows: launch week vs June average)
- 375/385.5-1=-2.7%