Denominations Do Not Pay Equally Reports on casino paybacks have shown that penny slots tend to have the worst payouts, while those $25 machines are the most generous of all. For some reason, $100 slots do not offer as much as the smaller ones, but it could be due to the gambler’s tendency, or due to how rare those slots are on the market. The thing is, do the higher denominations pay more than the lower denominations, as we have studied in our Slots 101?