A 100x bonus buy charges 100 times the selected base stake to enter a feature. At a $0.20 base stake, the purchase costs $20; at $1, it costs $100. It buys access to a random bonus round, not a guaranteed win or a return of the purchase price.
Read the purchase price in money
Games may offer several entry modes at different prices. Enhanced or super features can cost more than the basic bonus buy, and optional ante settings may affect the displayed stake. Read the final confirmation amount rather than relying on the small base-stake number.
The denomination also matters at crypto casinos. A balance displayed in fiat may be converted from crypto, while another platform may settle in coin units. Record which currency the charge and win use.
| Base stake | 100x purchase | 200x purchase | ||
|---|---|---|---|---|
| $0.20 | $20 | $40 | ||
| $0.50 | $50 | $100 | ||
| $1.00 | $100 | $200 |
Use the RTP for the purchased mode
A game can publish different theoretical returns for ordinary spins and purchased features. The relevant figure is the one in the rules for the exact feature being bought. Do not apply a base-game RTP automatically to a purchase.
As a purely illustrative calculation, a $20 purchase with a stated 96% return has a theoretical gross payout of $19.20 and a theoretical loss of $0.80 across repeated equivalent purchases. That is not a forecast of the next feature and says nothing about the chance of receiving less than $20.
A small expected loss can hide a large possible loss
A feature may return little or nothing, with rare large results supporting its average. Spending $20 of a $100 budget uses 20% of that budget immediately. Five such purchases can exhaust the full budget before any return is considered.
A higher maximum win does not establish better value. The payout probabilities and full feature cost are essential. Highlight clips show selected outcomes, not the complete distribution of purchased bonuses.
Check bonus and jurisdiction restrictions
A welcome offer may exclude feature purchases or count the full buy price against a maximum-bet rule. A 100x feature on a $0.20 base stake is a $20 action, even though the base stake looks small. Obtain an explicit interpretation if the terms are unclear.
Feature availability also differs by jurisdiction and operator configuration. A missing buy button is not a reason to disguise your location or switch to an unlicensed mirror.
Is buying the feature better than ordinary spins?
A buy changes how you access a feature and how quickly money is exposed. It does not make a negative-expectation game profitable. Comparing 100 ordinary spins with one 100x buy requires each mode's actual mathematics; equal cost alone does not make their outcomes equivalent.
For a fixed entertainment budget, decide whether the possible total loss of the purchase is acceptable before starting. Do not increase the base stake to recover a disappointing feature. The next round does not owe a better result.
Frequently asked questions
Does 100x mean I win at least 100 times my stake?
No. It is the purchase cost expressed as a multiple of the base stake.
Can a bonus buy pay less than its price?
Yes. A feature is a random game event and may return much less than the purchase cost.
Is the base-game RTP enough to calculate feature value?
Only if the rules explicitly say it applies to that purchase mode. Check the exact feature's information.
Compare casinos and related guides
Sources
Numerical scenarios are illustrative unless explicitly attributed to a named primary source.
- UK Gambling Commission: calculating return to player
- UK Gambling Commission: bonus changes effective 19 January 2026
- Pragmatic Play: Gates of Olympus
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