Bonus buy slots: Strategy on a budget

0) What's important to know right away

Bonus price usually = 50-200 bet × (often ~ 80-100 ×).
Volatility is high: you can get "zero" or almost zero per purchase.
The goal with a small budget is not to "shoot once," but to play a series of purchases to reduce the variance.

1) Budget and limits: the basis of the strategy

Let's denote the daily limit D - the amount that is not a pity to lose today.

Stop loss of the day: = D (no "dogon" and replenishment).
Stop wine of the day: + 50-100% to the current bank balance - fix 50% profit (withdrawal/reserve).
Limit per purchase (P): no more than 5-8% of D.
Minimum purchases per session: N ≥ 8-12. If the selected $ P $ price is N <6, discard the Bonus Buy and move to the base game/other slot.

Formulas:

• # of purchases $ N =\left\lfloor\dfrac {D} {P }ightfloor $
• The recommended rate for the bonus price is $ext {bet} =\dfrac {P} {k} $, where $ k $ is the price multiplier (for example, 80 × or 100 ×).

Example: D = 1,000 ₴ → P = 60-80 ₴ → at 80 × rate ≈ 0.75-1.0 ₴. We get 12-16 purchases.

2) Select a slot to purchase a bonus

Look for a combination of controlled price and non-killer variance:

• Bonus price: there are options in the ≤100× range and/or several purchase levels (cheaper/more expensive).
• RTP purchase mode: not lower than normal (often equal to or higher). If when buying RTP lower, skip the slot.
• Bonus type: preferred formats with frequent retryggers/multipliers, minimum payment guarantee (if provided).
• Average volatility is preferred to high at a modest D.
• Gamble rules inside the bonus: if there is a risk of "losing the bonus before the start," such a slot is not suitable for a small D.

3) Betting and scaling (no martingale)

Basic: fixed $ P $ for the entire block of 8-12 purchases.
Rate increase - only from profit:

• With a bankroll gain of + 50-100% of D - you can increase $ P $ by 10-20% for the next 3-4 purchases.
• Rate reduction: in case of drawdown − 30-40% of D - reduce $ P $ by 20-30% or pause.
• No Dogon: Don't double $ P $ after failure.

4) Bonus Buy session algorithm (with small D)

1. Plan: define D, $ P $, target N, stop wine/stop loss (numbers).
2. Series markup: play in blocks of 4-6 purchases → a short break of 5-10 minutes → the next block.
3. Gaming solutions inside the bonus:

• If the slot offers a "gamble to better conditions" with a real chance of losing the bonus - do not gamble with a small D.
• If the choice between "reliable/risky" - take reliably (more spins/lower multipliers).
4. Fixing winnings:
• Any bonus with payment ≥ 2-3 × P - partially fix (at least 30-50% in reserve), the rest goes to the planned block.
5. Stops:
• Stop wines have been reached → we fix that the remaining bank ≤ the starting D → can be continued only according to the original plan; or close the day.
• Stop loss (D) reached → day closed.

5) Cheap vs expensive shopping

Cheap (≤80 -100 ×): better suited for small D - more attempts, flatter curve.
Expensive (≥150 -200 ×): only allowed if N ≥ 8 remains after purchase. Otherwise, the risk of "one or two attempts and everything" is too high.
Combined approach: 80% of the bank - cheap purchases, 20% - from profit by "a little more expensive" (but not beyond the limits).

6) When to opt out

$ N <$6 at any reasonable rate.
RTP purchase mode is lower than the base game.
The slot requires a mandatory gumble for normal conditions.
A series of "dry" bonuses and a drawdown − 40% D - it is better to switch to a low/mid-range slot in the base or end the day.

7) Examples of settings (for reference)

Micro-bank (D = 300 ₴): $ P = 15-20 ₴$ → N = 15-20 (at 80 × the rate ~ 0.20-0.25 ₴). Only cheap purchases, no gumble.
Small Bank (D = 1,000 ₴): $ P = 60-80 ₴$ → N = 12-16. A rare "slightly more expensive" purchase from profit is allowed.
Average bank (D = 3,000 ₴): $ P = 180-240 ₴$ → N = 12-16. You can alternate 80 × and 100-120 ×, but raise $ P $ only after fixing the profit.

8) Risk control and discipline

Session timer: every 45-60 min - 10 min break
Log: write down the slot, $ P $, bonus result, block result - you can see where the plan "flows."
Uniform rules for all slots: the same percentage of stops and fixation, so as not to "change shoes" for emotions.
No replenishment per day: repeated deposits destroy the entire variance calculation.

9) Frequent errors (and adjustments)

One expensive purchase for the whole bank. Correction: Split the pot for 8-12 attempts.
Gamble for the "perfect" bonus. Correction: with a small D - take guaranteed.
Raising $ P $ after a series of cons. Correction: only decrease or pause.
Change of slot every 2-3 purchases. Correction: Play in blocks 4-6 or lose structure.
Ignore RTP purchase mode. Correction: check slot info screen; low RTP on purchase - failure.

Result

The Bonus Buy strategy with a limited budget is a serial game of small purchases with a fixed $ P $, medium/low variance priority, hard feet and partial profit fixing. If at the selected bonus price you do not get at least 8-12 attempts, it is better not to use the purchase of bonuses on that day. The main tool here is not a "lucky bonus," but the discipline and mathematics of bank distribution.