Union Arena Sword Art Online Vol.2 vs Demon Slayer: Kimetsu no Yaiba Vol.2 booster box: which is worth opening?
Neither is worth opening at today's prices, but Sword Art Online Vol.2 comes closer: its cards are worth 87% of its price after selling costs, against 24% for Demon Slayer: Kimetsu no Yaiba Vol.2.
Side by side
| Sword Art Online Vol.2 booster box | Demon Slayer: Kimetsu no Yaiba Vol.2 booster box | |
|---|---|---|
| Verdict | Keep it sealed | Keep it sealed |
| Box price today | $109€97 | $174€156 |
| Cards inside, after selling costs | $95€85 | $42€37 |
| Cards ÷ price | 87% | 24% |
| Boxes that lose money | 70 of 100 boxes | 89 of 100 boxes |
| A typical box (median) | $14€13 | $8€8 |
| 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 | January 30, 2026 | December 12, 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