Before, I tried a series of buying bonuses on their game, Starlight Princess. I'm playing at a local online casino.

(USD 1 = PHP 55)
Bet: PHP 1
Buy Free Spins Worth: PHP 100
Bankroll: PHP 500

Result: Not satisfying. 3 consecutive buy bonuses worth PHP 300 and the return total is just around PHP 170+. I know the number of purchases I made isn't enough to conclude but I'm expecting at least 1/3 of my buy bonus will give me good profits. At least, I've experienced the bonus feature which is hard to trigger in a manual spin.

Next move: Instead of buying the bonus feature, I turned ON the double the chance to win the bonus feature. I managed to trigger several bonus features although the win is not that much, the total amount I get is enough to make my bankroll last longer.

Final Result: Still busted lol after playing several hours.