Buy Feature Option Some online slots feature an option that lets you purchase the bonus immediately. You pay a certain multiple of your stake to trigger the bonus on askmebet slot the ensuing spin. Here’s an example: A slot offers free spins for the bonus./You normally must land three scatter symbols to trigger free spins./The feature buy costs 80x your stake (e.g. 80 x 1 = $80). 80x your normal bet is a tremendous amount to spend on one round. However, this investment can pay off if you notch a big bonus payout.