Payout is an expected amount of money that the player can get based upon the bet placed. Payouts in online roulette are as in any other gambling game dependent upon the probability of a number coming up. Single numbers (like Straight-up bet) provide very attractive payout of 35 to 1, but a straight-up number bet wins very rarely and the roulette odds are very small. Other bets only provide even money but are very likely to win and therefore are the ones you should go for.
Roulette payouts are the same for internet roulette and land version of the game. Let's start with the payouts for inside bets. These are the highest because of the low winning probabilities. For example, if your Straight-up bet worth $100 wins, you will be paid out: 35 x $100 = $3,500; but if you make a Split or Street bet and win, the payout will be $1,700 and $1,100 correspondingly.