MelDEV PowerBoatForum

Testing a bought bonus in demo mode before spending real money is something I would recommend to anyone. It shows you the retrigger frequency, the multiplier logic and how often the feature pays back below its own price. Free versions of most of the well known buy titles, along with notes on which features behave differently in demo, are available through https://thebonusbuyslots.com. Demo results are still random, so treat them as a feel for the game rather than proof of anything.