Is the Hackers' Slumber booster box worth it?
A lottery — value in a few cards
The booster box costs €57.73 today (Cardmarket trend). 22 cards are worth €5 or more — €881.45 together, 15.27× the box price. The top five cards make up 66% of the whole set’s value.
How cards are priced
Most cards in any set are commons worth cents. Whether a box pays off depends on hitting one of the few top cards.
Most valuable cards in the set
Full set →| # | Card | Set | Price today | 30 days |
|---|---|---|---|---|
| 1 |  Mastemon BT23-102 | Hackers' Slumber | €358.20 | -9% |
| 2 |  Ryuji Mishima BT23-085 | Hackers' Slumber | €78.38 | +3% |
| 3 |  Erika Mishima BT23-084 | Hackers' Slumber | €67.69 | -30% |
| 4 |  Keisuke Amasawa BT23-090 | Hackers' Slumber | €55.82 | -35% |
| 5 | Mastemon BT23-102 | Hackers' Slumber | €45.27 | -24% |
| 6 |  Hudiemon BT23-101 | Hackers' Slumber | €38.44 | -81% |
| 7 |  Chitose Imai BT23-081 | Hackers' Slumber | €38.27 | -66% |
| 8 |  Takumi Aiba BT23-089 | Hackers' Slumber | €37.74 | -31% |
| 9 |  Examon BT23-047 | Hackers' Slumber | €19.10 | +1% |
| 10 |  Jesmon BT23-013 | Hackers' Slumber | €17.96 | -9% |
| 11 |  TigerVespamon Ace BT23-045 | Hackers' Slumber | €16.20 | +17% |
| 12 |  Fei BT23-083 | Hackers' Slumber | €12.90 | +14% |
| 13 | Hudiemon BT23-101 | Hackers' Slumber | €12.54 | -35% |
| 14 | Mastemon BT23-102 | Hackers' Slumber | €11.85 | -6% |
| 15 | Examon BT23-047 | Hackers' Slumber | €11.66 | +13% |
| 16 |  Dullahamon BT23-071 | Hackers' Slumber | €10.38 | -7% |
| 17 | Erika Mishima BT23-084 | Hackers' Slumber | €10.22 | -17% |
| 18 |  Belphemon (X Antibody) BT23-070 | Hackers' Slumber | €8.73 | -21% |
| 19 | Jesmon BT23-013 | Hackers' Slumber | €8.37 | +8% |
| 20 | Hudiemon BT23-101 | Hackers' Slumber | €7.47 | -14% |
Prices: Cardmarket trend, updated daily — as of Oct 29, 2026.
How to read these numbers
The full-set value is what all cards would cost as singles. One box won’t complete the set and the rarest cards are rare, so we focus on cards from €5. If they are worth many times the box price, the set is rich in valuable cards; if value is concentrated in a few cards (high top-5 share), opening is a lottery.
If you want a specific card, buying it as a single is almost always cheaper. A box makes sense if you enjoy opening, play limited/draft or collect sealed product.