Yes you are right that it can be expensive but it will also depending on our luck because if we are lucky, we can make many spins with low bankroll and vice versa I do both normal spins and buy bonus depending on my mood and my bankroll obviously. Hitting big multiplier with normal spins is much more satisfying than using buy bonus because I can say that big multiplier with normal spins is more real multiplier than buying bonus although if the winning amount is equal or even less.