Set your own backing. Set your own odds.
One pool, one price. Every asset's rarity is the inverse of the SOL backing its depositor chose, and the ticket is the harmonic mean of all of them — so a floor item and a grail can sit in the same pack without either subsidising the other.
Reverts if the price moves above 0.0000 SOL before your transaction lands.
Every asset's pull weight is V = K / backing, so expensive assets are proportionally rarer. The ticket is the harmonic mean T = n · K / ΣV, which makes the expected payout of a rip exactly equal to the ticket price before fees — a 0.05 SOL floor item and a 500 SOL grail can share one pool without either subsidising the other.
The highest-backed asset in the pool collects 1% of every ticket. Nothing holds it right now — the next deposit takes it.