The Bonus Buy feature allows players to skip base play and immediately trigger 15 free spins for a flat cost of 100x the current bet. At a £1.00 bet, the purchase costs £100. At £5.00, it costs £500. That is a significant outlay for a single bonus round.
Let's do the maths. The RTP of the Bonus Buy round is approximately 96.23%, marginally lower than the overall game RTP of 96.50%. The difference, roughly 0.27%, means that over the long run, buying bonuses is statistically slightly less efficient than earning them organically. The variance on any individual purchase is enormous, though.
To break even on a £100 Bonus Buy, you need the free spins round to generate at least 100x your base bet. That requires meaningful multiplier accumulation. Purchasing the bonus for £100 (at a £1 stake) and receiving a free spins round that returns only 15x-30x is a common outcome. The 5,000x maximum is a possibility with a probability of 1 in 718,391. Players should approach Bonus Buy with full awareness that the most likely outcome on any single purchase is a net loss.
The Ante Bet toggle offers a less aggressive alternative. It increases your bet cost by 25% per spin. In return, the probability of triggering the free spins round is doubled. At a base bet of £1.00, the Ante Bet raises each spin to £1.25. Unlike Bonus Buy, the Ante Bet does not change the base RTP of 96.50%. It simply redistributes the return profile: you pay more per spin but access the bonus round more frequently, which is where the bulk of large payouts occur.
UK Legal Status: The UK Gambling Commission banned Bonus Buy features for UK-licensed operators, with redesigned slot versions mandatory from late 2021 onward. The regulator determined that Bonus Buy "actively encourages customers to chase their losses" and breaches clause 14a of the Regulatory Technical Standards.