Bonus Buy Slots Explained: What You Are Actually Paying For

The bonus buy button is the most tempting button in modern slots. Skip the grind, pay 100x your stake, get the feature instantly. I have bought more bonuses than I can count over 15 years of playing, including stretches where I should not have, so this guide is the honest version of what that button does to your money.

What a bonus buy is

A bonus buy, sometimes called feature buy or bonus purchase, lets you pay a fixed price to trigger a slot's bonus feature immediately instead of waiting for it to land naturally.

The standard price is 100x your current stake. On a 1 euro stake, the buy costs 100 euro and the free spins start instantly. Some games offer a menu of buys: a cheap entry version, the standard feature, and an enhanced or "super" version at 200x to 500x, sometimes far more.

Mechanically, you are paying the average cost of reaching the feature through normal spins, compressed into one payment.

A typical bonus buy menu showing the price in stake multiples

The maths nobody reads

Two numbers matter and both are in the game's info screen, not on the buy button.

The buy RTP. Most bonus buys have their own RTP, often slightly different from the base game. Sometimes higher, sometimes lower. A game listed at 96.5% base RTP might run 96.6% on the buy, or 96.0%. The difference sounds small but you are wagering 100x per click, so it compounds fast. Check the info screen before assuming the buy is the "efficient" route.

The median outcome. This is the number that hurts. The average return on a 100x buy might be 96x, but averages are propped up by rare huge wins. The median, the result in the middle if you sorted all buys, is usually far lower. On many popular high volatility games, the most common single-buy outcome is a return between 20x and 60x on your 100x payment. Below half your money back is a completely normal result for one buy.

In plain language: the typical bonus buy loses, and the maths only approaches the advertised RTP across hundreds of buys. One buy is not a sample. It is a coin flip with the edges shaved against you.

What buying does to variance

Here is the part the buy menu hides. Buying bonuses does not just change how you reach the feature. It changes the shape of your risk.

Spinning 100 euro at 1 euro per spin gives you 100 independent chances, base game hits along the way, and time to stop. Buying one bonus puts the entire 100 euro on a single outcome. Same money, radically more variance.

That is why bonus buy sessions feel so violent. Three dead buys in a row is 300 euro gone in ninety seconds, and three dead buys in a row is not bad luck, it is a routine Tuesday on a high volatility game. If you have read our volatility guide, bonus buying is best understood as voluntarily playing the most volatile version of an already volatile game.

Why streamers buy bonuses constantly

Worth being straight about this, since I come from that world. Streamers buy bonuses because features are content and base game grinding is dead air. A stream needs a result every few minutes. That is an entertainment production decision, not a strategy.

When you watch a highlight reel of 500x buy wins, you are watching survivorship bias with a soundtrack. Nobody clips the forty dead buys around it. Do not let stream content calibrate your sense of what a normal buy returns. Our 500-spin review tests exist partly as an antidote to that: real sessions, full numbers, losses included.

Where bonus buys are banned

Bonus buy features are illegal in the United Kingdom, where the Gambling Commission prohibited them, and restricted in several other markets. If you play from a regulated market and the buy button is missing, that is why. The same game runs different configurations by jurisdiction, which is also true of RTP versions, covered in our RTP guide.

A sensible way to handle the buy button

If you are going to buy bonuses anyway, and plenty of players will, here is the honest checklist I use:

Check the buy RTP in the info screen. If the buy RTP is lower than the base game, you are paying a premium for impatience.
Price it against your whole bankroll, not your stake. A 100x buy should be a small fraction of your session budget. If one buy is half your bankroll, you are not playing the game, you are flipping a coin for your evening.
Decide your number of buys before the first one. Three buys, whatever happens, then done. The most expensive sentence in slots is "one more buy to get it back".
Try the feature in demo first. Every game in our free demo slots library lets you buy bonuses with play money. Ten demo buys will show you the real distribution of outcomes faster than any review.
Treat a good buy as the exit, not the entry. A 200x return is a result. Recycling it into more buys is how winning sessions end at zero.

Are bonus buys ever worth it?

Mathematically, a buy with equal or higher RTP than the base game is a fair trade of time for variance. You skip the grind and accept a wilder ride for roughly the same long-run price.

Practically, the danger is speed. Bonus buying moves money ten times faster than spinning, and loss limits that work at spin speed fall apart at buy speed. The feature is the same one you would have reached naturally. The only thing you bought is velocity, and velocity is exactly what a gambling budget does not need.

My honest position after years of both: buys are fine as a planned, budgeted part of a session, and ruinous as a reaction to a bad one.

FAQ

Is the bonus buy RTP better than the base game? It varies by game. Some buys run slightly above base RTP, some below. The only reliable source is the game's own info screen at the casino where you play.

What does a 100x bonus buy usually return? On most high volatility games the most common outcomes cluster well below 100x, often between 20x and 60x. The advertised average is lifted by rare big hits. Expect the median, hope for the average, plan for zero.

Can I buy bonuses in demo mode? Yes, on almost every game that has the feature. It is the cheapest education in slots. Try it in our demo library before spending anything.

Why is the buy button missing at my casino? Your jurisdiction likely prohibits it, the UK being the clearest example. The game detects your market and removes the feature.

Is buying bonuses better than spinning for them? Neither is "better". Buying trades time for concentrated risk at roughly the same long-run RTP. Spinning spreads the same maths over more, smaller decisions, which is easier to control.

Do super or enhanced buys have better value? Sometimes the enhanced buy carries a marginally different RTP, listed in the info screen. What it always carries is more variance. A 500x buy that bricks is a session-ending event. Price it that way.

A note on playing responsibly

Bonus buying is the fastest way to spend money in a slot, and speed is the enemy of every limit you set. If you find yourself buying to chase a previous buy, that is the signal to stop, not to adjust the stake. Set a fixed buy budget before the session, count every buy against it, and walk when it is gone. Slots are entertainment with a built-in cost, never an investment. If the stop button is getting harder to press, BeGambleAware and GamCare are free, anonymous, and used to this exact conversation.

Written by Hampus Grave. Last updated June 2026.