Is the That Time I Got Reincarnated as a Slime Vol.3 booster box worth it?
A lottery — value in a few cards
The booster box costs €93.08 today (Cardmarket trend). 33 cards are worth €5 or more — €1,462.58 together, 15.71× the box price. The top five cards make up 60% 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 |  For a World to Live In With a Smile, Rimuru TSK/S101-E076SEC SEC | That Time I Got Reincarnated as a Slime Vol.3 | €350.00 | 0% |
| 2 |  A Throbbing That Signals Freedom, Mjurran TSK/S101-E077SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €199.99 | 0% |
| 3 |  Mercy in Pink, Shuna TSK/S101-E044SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €159.62 | -6% |
| 4 |  “Newbie” Demon Lord, Rimuru TSK/S101-E047SEC SEC | That Time I Got Reincarnated as a Slime Vol.3 | €127.98 | -8% |
| 5 |  Pride of a Secretary, Shion TSK/S101-E001SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €100.00 | +9% |
| 6 |  Power Out of This World, Milim TSK/S101-E045SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €99.03 | -31% |
| 7 |  All-Piercing Light, Rimuru TSK/S101-E002SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €81.98 | -16% |
| 8 |  Calamity-Destroying Black Flame, Benimaru TSK/S101-E046SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €51.39 | -17% |
| 9 |  A Seal Released, Veldora TSK/S101-E026SP SP | That Time I Got Reincarnated as a Slime Vol.3 | €50.22 | -6% |
| 10 |  Everlasting Words of Love TSK/S101-E098R RRR | That Time I Got Reincarnated as a Slime Vol.3 | €27.83 | +13% |
| 11 |  Quiet Anger, Shuna TSK/S101-E052S SR | That Time I Got Reincarnated as a Slime Vol.3 | €19.38 | +28% |
| 12 |  According to Strategy, Milim TSK/S101-E048S SR | That Time I Got Reincarnated as a Slime Vol.3 | €17.09 | -3% |
| 13 |  To the Friends Awaiting His Return TSK/S101-E099R RRR | That Time I Got Reincarnated as a Slime Vol.3 | €16.99 | +113% |
| 14 |  To the Strong, Benimaru TSK/S101-E054S SR | That Time I Got Reincarnated as a Slime Vol.3 | €15.10 | +1% |
| 15 |  Awakening of a True Demon Lord, Rimuru TSK/S101-E049S SR | That Time I Got Reincarnated as a Slime Vol.3 | €14.99 | +220% |
| 16 |  Battle-Hungry, Shion TSK/S101-E007S SR | That Time I Got Reincarnated as a Slime Vol.3 | €13.98 | +3% |
| 17 |  Competent Right-Hand Woman, Soka TSK/S101-E083S (SR) | That Time I Got Reincarnated as a Slime Vol.3 | €9.24 | +87% |
| 18 |  A Treasured Place to Return To, Soei TSK/S101-E078S SR | That Time I Got Reincarnated as a Slime Vol.3 | €8.00 | +3% |
| 19 |  To His Dear Friends, Rimuru TSK/S101-E082S (SR) | That Time I Got Reincarnated as a Slime Vol.3 | €7.99 | +67% |
| 20 |  Heart-Pounding Cooking, Shion TSK/S101-E003S SR | That Time I Got Reincarnated as a Slime Vol.3 | €7.97 | -30% |
Prices: Cardmarket trend, updated daily — as of Oct 30, 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.