How cards are priced
< 1 € 1081–5 € 235–20 € 2220–100 € 6≥ 100 € 10
Most cards in any set are commons worth cents. Whether a box pays off depends on hitting one of the few top cards.
| # | Card | Set | Price today | 30 days |
|---|
| 1 |  Shy ""Girlfriend"", Sumi | Rent-A-Girlfriend | €549.99 | +68% |
| 2 | Everyone's ""Girlfriend"", Chizuru | Rent-A-Girlfriend | €404.18 | -29% |
| 3 |  Treasured Moment, Chizuru | Rent-A-Girlfriend | €250.00 | 0% |
| 4 | ""I'm an Adult"" Ruka | Rent-A-Girlfriend | €224.44 | +21% |
| 5 |  Rental Girlfriend, Chizuru KNK/W86-TE14 TD | Rent-A-Girlfriend | €215.00 | 0% |
| 6 |  Ex-Girlfriend, Mami KNK/W86-E001SSP SSP | Rent-A-Girlfriend | €180.44 | -4% |
| 7 |  Chizuru Mizuhara KNK/W86-E050SP SP | Rent-A-Girlfriend | €141.24 | -4% |
| 8 |  Sumi Sakurasawa KNK/W86-E020SP SP | Rent-A-Girlfriend | €126.05 | +59% |
| 9 |  Ruka Sarashina KNK/W86-E019SP SP | Rent-A-Girlfriend | €111.16 | +2% |
| 10 |  Mami Nanami KNK/W86-E002SP SP | Rent-A-Girlfriend | €107.80 | -1% |
| 11 |  Memories Between the Two, Mami KNK/W86-E003S SR | Rent-A-Girlfriend | €48.39 | +47% |
| 12 |  Mami & Sumi & Chizuru & Ruka | Rent-A-Girlfriend | €41.48 | -25% |
| 13 | Treasured Moment, Chizuru | Rent-A-Girlfriend | €39.22 | +66% |
| 14 |  Bouldering Date, Ruka KNK/W86-E077S SR | Rent-A-Girlfriend | €26.71 | +16% |
| 15 | I'm the ""Girlfriend"", Ruka | Rent-A-Girlfriend | €22.41 | +22% |
| 16 |  Morning Routine, Sumi KNK/W86-E055S SR | Rent-A-Girlfriend | €20.27 | +51% |
| 17 |  An Apology Present KNK/W86-E074R RRR | Rent-A-Girlfriend | €16.15 | +30% |
| 18 |  Filling the Hole in the Heart, Chizuru KNK/W86-E053S SR | Rent-A-Girlfriend | €13.99 | +46% |
| 19 |  Unexpected Words, Mami KNK/W86-TE08 TD | Rent-A-Girlfriend | €12.50 | +1% |
| 20 |  Mysterious Cute Girl, Ruka KNK/W86-TE07 TD | Rent-A-Girlfriend | €12.22 | 0% |
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.
