Which lever to pull: more chances or a better rate
Payout is chances times value per chance times the rate. Users feel the count and barely notice the rate, so the count is the lever that changes behaviour.
Tagged “rewards”
3 entries
Keep rewards worth the same in dollars as the coin moves
Store the reward in USD, convert at claim time, and clamp the movement so a price spike cannot empty the faucet in an afternoon.
A weighted reward table you can actually afford
Pick a prize by weight, and compute the expected cost per claim before you launch instead of discovering it from your wallet balance.