Every key you buy is split before it lands: 90% into the pot, 7% to whoever referred you, 3% to the developer. With no referrer, that 10% goes to the developer.
Keys get more expensive as more are sold. The price you see is the price you pay.
Less than one whole key adds no time and takes no lead, but the ETH is still spent.
Early in a round each player can put in at most … ETH. The cap lifts once players have put … ETH into that round.
A round opens with … on the clock, already running. If nobody buys before it runs out there is no winner, and the whole pot carries into the next round.
When the clock hits zero, anyone can close the round. The next one opens immediately, already seeded with at least 10% of the last pot.