A 25% coin uplift, priced after its playthrough
A $20 package normally carries 20 SC but is offering 25 SC with a 1x requirement. What is a coin actually costing?
Inputs
| Input | Value | Unit |
|---|---|---|
| Purchase price | 20 | USD |
| Sweeps Coins received | 25 | SC |
| Standard SC at this price | 20 | SC |
| Playthrough multiplier | 1 | x |
| Assumed RTP | 96 | % |
Working
- The headline figures are straightforward: 25 SC for $20 is 1.25 SC per dollar, or $0.80 per coin, and 25 SC against a 20 SC baseline is a 25% uplift.
- Those figures describe the price, not what you keep. The 1x requirement means 25 SC must be staked before the balance can be redeemed.
- At an assumed 96% RTP, staking 25 SC is expected to cost 25 x 0.04 = 1 SC, leaving 24 SC.
- So the price per coin you can actually expect to redeem is $20 / 24 = $0.8333, not $0.80. The requirement quietly took about 4% of the advertised value.
- The gap between $0.80 and $0.8333 is small here only because the requirement is light. At 10x with the same assumptions the balance falls to 15 SC and the real price rises to $1.33 per redeemable coin — above the $1.00 that 20 SC with no requirement would have cost.
Result
| Output | Value |
|---|---|
| SC per dollar | 1.25 |
| Cost per SC | $0.80 |
| Promotional uplift | 25% |
| Expected balance after | 24.00 SC |
| Cost per redeemable SC | $0.8333 |
Takeaway
Cost per coin is the advertised price. Cost per redeemable coin is the expected cost after wagering, and only the second one accounts for the wagering the coins have to survive.
The formula behind it
SC per dollar = S ÷ P
Cost per SC = P ÷ S
Uplift = (S ÷ S₀) − 1
E[balance] = S − ((S × m) ÷ c) × (1 − r)
Effective cost per redeemable SC = P ÷ E[balance]
Assumptions
- Sweeps Coins are treated as redeemable at one coin to one dollar, which is the usual sweepstakes redemption rate. If an operator redeems at a different rate, the money figures scale by that rate.
- The uplift compares like with like: S and S₀ must both be the coin amount for the same purchase price.
- The expected-balance step carries every assumption and limitation of the expected-balance method.
Limitations
- Cost per coin measures advertised price, not expected cost after wagering. A cheaper coin attached to a heavier playthrough requirement can have a higher cost per redeemable coin than a dearer coin with none.
- Effective cost per redeemable SC is reported only while the expected balance is above zero. Where the requirement is heavy enough to exhaust the balance in expectation, no meaningful cost-per-redeemable-coin exists and the calculator says so instead of printing a large number.
- Minimum redemption thresholds, redemption fees, and identity-verification requirements are not modelled and can matter more than the arithmetic.
This is a theoretical calculation, not a prediction. It describes an average over a very large number of repetitions and says nothing about what will happen in any particular session.
Run these numbers yourself · All worked examples · Methodology