Obsidian Flames Booster Box.

Opening the 36 packs inside gives back $137.56£103.85€122.73 in cards for a typical one, against $369.94£279.27€330.07 to buy it sealed. That is 37% of what it costs. About 1% of simulated openings came out ahead.

Typical opening, middle of 2,000,000 runs

$137.56£103.85€122.73

Average opening

$150.28£113.45€134.08 (41% of price)

Middle 8 openings in 10 land between

$95.28£71.93€85.01 and $223.07£168.40€199.03

Best case, the luckiest 1 opening in 100

$314.15£237.15€280.29 (still under the $369.94£279.27€330.07 price)

Of that average, hits rather than bulk

$97.36£73.50€86.87

Worth opening under, after selling fees

$83.96£63.38€74.91 (77% under what it costs)

Card carrying most of the average

Charizard ex, 12%

$52.92£39.95€47.22 of the average is commons and uncommons at a few cents each, priced at what the market quotes rather than what a person gets for a box of them, so read the average as a ceiling. Only the packs are counted: any promo card packed alongside them is not. Rates from the published per-set openings read on Aug 30, 2026. Every product ranked, and how this is worked out.