Union Arena ONE PUNCH MAN vs Demon Slayer: Kimetsu no Yaiba booster box: which is worth opening?
Neither is worth opening at today's prices, but ONE PUNCH MAN comes closer: its cards are worth 39% of its price after selling costs, against 27% for Demon Slayer: Kimetsu no Yaiba.
Side by side
| ONE PUNCH MAN booster box | Demon Slayer: Kimetsu no Yaiba booster box | |
|---|---|---|
| Verdict | Keep it sealed | Keep it sealed |
| Box price today | $160€143 | $291€260 |
| Cards inside, after selling costs | $62€55 | $77€69 |
| Cards ÷ price | 39% | 27% |
| Boxes that lose money | 86 of 100 boxes | 94 of 100 boxes |
| A typical box (median) | $27€24 | $32€29 |
| Rarest pull | Alt-art parallel (★ / ★★): 66 of 100 boxes | Alt-art parallel (★ / ★★): 66 of 100 boxes |
| Packs | 16 packs of 12 cards | 16 packs of 12 cards |
| Released | March 7, 2025 | January 24, 2025 |
The two boxes
How we work this out
Both boxes are worked out the same way: today's card prices, selling costs taken off, and simulated boxes to see how often one loses money. Read the full method