The special thing about bonus buy slots is that you have the opportunity to pay for a bonus instead of waiting for it to appear on the reels. In this way, you can increase your chances to win remarkably. However, such an approach will bring you profit only if you know which games are fair and reliable and which aren’t. All the slots included in my selection are tested by me. I can assure you that they all are worth your attention. Try them out and win!