Is the Eternity Code (Japanese) booster box worth it?
A lottery — value in a few cards
The booster box costs €50.00 today (Cardmarket trend). 14 cards are worth €5 or more — €330.14 together, 6.60× the box price. The top five cards make up 65% 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 |  Harr, Generaider Boss of Storms | Eternity Code (Japanese) | €98.50 | 0% |
| 2 |  Ghost Mourner & Moonlit Chill | Eternity Code (Japanese) | €69.00 | 0% |
| 3 |  Accesscode Talker | Eternity Code (Japanese) | €45.00 | -74% |
| 4 |  Traptrix Allomerus | Eternity Code (Japanese) | €24.95 | +31% |
| 5 |  Archnemeses Protos | Eternity Code (Japanese) | €15.64 | 0% |
| 6 | Accesscode Talker | Eternity Code (Japanese) | €13.71 | -57% |
| 7 |  Chamber Dragonmaid | Eternity Code (Japanese) | €9.95 | 0% |
| 8 |  Eria the Water Charmer, Gentle | Eternity Code (Japanese) | €9.91 | -70% |
| 9 | Accesscode Talker | Eternity Code (Japanese) | €8.99 | 0% |
| 10 |  Marincess Great Bubble Reef | Eternity Code (Japanese) | €7.95 | -11% |
| 11 |  Dragonmaid Sheou | Eternity Code (Japanese) | €7.10 | -34% |
| 12 | Harr, Generaider Boss of Storms | Eternity Code (Japanese) | €6.99 | -3% |
| 13 |  The Arrival Cyberse @Ignister | Eternity Code (Japanese) | €6.44 | — |
| 14 | Archnemeses Protos | Eternity Code (Japanese) | €6.01 | +98% |
| 15 |  Deep Sea Prima Donna | Eternity Code (Japanese) | €4.60 | 0% |
| 16 |  Madolche Salon ETCO-EN064 | Eternity Code (Japanese) | €4.33 | -7% |
| 17 |  Fusion Deployment | Eternity Code (Japanese) | €3.99 | +23% |
| 18 | The Arrival Cyberse @Ignister | Eternity Code (Japanese) | €3.91 | -61% |
| 19 | Accesscode Talker | Eternity Code (Japanese) | €3.62 | -79% |
| 20 | Chamber Dragonmaid | Eternity Code (Japanese) | €3.26 | +2% |
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.