The “Bonus Buy” (or Feature Buy) option allows you to skip the grind and jump straight into the action. But at 100x or even 500x your stake, is it mathematically worth it?
Our Bonus Buy EV Calculator breaks down the cost. By analyzing the Bonus RTP and the purchase price, it reveals the Expected Value (EV) and the “cost of entertainment” for skipping the base game.
How to Use the Bonus Buy Calculator
Buying bonuses is a high-risk strategy. Use this tool to understand the math before you click “Buy”.
- Bonus Cost (x Bet): Enter the cost multiplier. Standard buys are usually 100x, while “Super Buys” can be 500x or more.
- Base Bet ($): Enter the stake size you are playing at (e.g., $1.00).
- Bonus RTP (%): Enter the theoretical Return to Player specific to the Buy Feature. This is often slightly different from the base game RTP (check the slot’s info file).
- Analyze the Result: The calculator shows the Net EV. A negative EV is standard (the cost of the casino’s edge), but this helps you visualize exactly how much you are paying on average for the thrill.
Example: The High Cost of “Super” Buys
You want to buy a “Super Bonus” for $500 (500x stake) on a high-volatility slot with a 96.5% RTP.
- Cost: $500.
- Expected Return: $500 * 96.5% = $482.50.
- Net Loss (EV): -$17.50 per buy.
While -$17.50 doesn’t sound bad, remember that variance is huge. You might win $5,000, or you might win $20. The calculator reminds you that the average outcome is a loss, helping you manage your bankroll expectations.
Frequently Asked Questions (FAQ)
Is buying the bonus better than spinning?
Mathematically, the RTP of a Bonus Buy is often slightly higher (e.g., 96.5% vs 96.0%). However, buying bonuses dramatically increases Volatility. You can drain a bankroll in minutes buying bonuses, whereas spinning manually allows for more play time.
What is RTP?
RTP (Return to Player) is the percentage of wagered money a slot pays back over millions of spins. An RTP of 96% means the casino keeps 4% as profit over the long run.