Right now: the best rip in Umamusume: Pretty Derby is the Booster Box at $65.80 against $204.38 of expected pulls — a +164% margin after ~15% selling fees. Figures refresh every two hours.
Umamusume: Pretty Derby is the newest Weiss Schwarz set we track, released June 26, 2026 — which means every number on this page is still moving. Sealed prices on fresh Weiss product typically take weeks to find a floor, so check the timestamps and expect swings.
The value story is entirely license-driven. Cygames' horse-girl franchise has one of the most spend-happy fanbases in gacha, and the box economics revolve around voice-actress-signed SP cards of the most popular characters. Our community model puts the chase odds at roughly one Triple Rare per eight packs, one Special Rare per seventeen, and a Super-Special once in fifty — about one signature-tier pull every third box.
One early pattern worth noting: loose packs launched at a steep hype premium, while the sixteen-pack box has priced much closer to what the math supports. If you're set on ripping this one, the table below shows which format is currently less punishing — at launch it has been the box, by a wide margin.
Sealed products: price vs. expected value
| Product | Margin after ~15% fees | Market price | EV of pulls |
|---|---|---|---|
| Booster Pack | +63% | $6.65 | $12.77 |
| Booster Box | +164% | $65.80 | $204.38 |
Pull-rate model
Umamusume: Pretty Derby packs hold 9 cards; the slots below are the ones that carry value.
| Slot | Outcome | Est. chance |
|---|---|---|
| Rare slot | Common | 50% |
| Rare slot | Uncommon | 30% |
| Rare slot | Rare | 20% |
| Hit slot | Rare (foil) | 55% |
| Hit slot | Super Rare | 25% |
| Hit slot | Triple Rare (RRR) | 12% |
| Hit slot | Special Rare | 6% |
| Hit slot | Super-Special | 2% |
Community-estimated rates — no publisher discloses official pull odds. The calculator prices each outcome from live singles data.
FAQ
When did Umamusume: Pretty Derby release for Weiss Schwarz?
June 26, 2026 in English. It's a recent release, so sealed and single prices are still settling — the EV on this page can move meaningfully week to week.
What are the chase cards in Umamusume Weiss Schwarz?
Voice-actress-signed SP cards of the most popular characters are the top chase, with Triple Rares (RRR) and Super-Special variants making up the rest of the hit tier.
How many packs are in an Umamusume booster box?
Sixteen packs of nine cards each. Each pack has one hit slot, and that's where the signed-card lottery lives.
🎴 Rip a Umamusume: Pretty Derby pack yourself — simulated, real odds, live prices →