prpht‑sim

£1 max stake · sweepstake funnel · sportsbook + prediction markets — simulate.prpht.net

Product

The sweepstake cap is opt-in: the £1 cap holds unless a group deliberately turns larger stakes on, so the stake distribution is a mixture of both. A tier that is free up to £k collects nothing on most entries — watch the effective rate, not the headline one. Raking the whole entry once it crosses the threshold earns a little more and invites a group to split one £5 pool into five £1 pools to duck it.

Customer behaviour

Acquisition

Payment rail & other revenue

Card acquiring on a gambling MCC is roughly 1.4% + 20p. Open banking is a flat Faster Payments fee with no interchange — try 0.2% + 15p. On small deposits the fixed leg is the whole cost.

Net of the ad network's take. It pays corporation tax but not betting duty, the levy, or the platform's share of GGR, so a pound here is worth about £2.50 of GGR. Assumes the turnkey contract does not claim a share of non-gaming revenue — check that before believing it.

Costs & commercial terms

All
Grace Turnkey
Betfair Vendor
→ Independent
Cumulative net
Monthly net
Active customers
Monthly GGR
Required scale
Monthly active accounts · GB / UK&I · sourced in DATA-SOURCES.md
Simulating…

Unit economics & required scale

Break-even = first month cumulative net turns positive. ▼ marks one-off setup costs.
Free pool betting is pari-mutuel: winners are paid by other bettors, so at 0% takeout it generates no revenue and carries no position risk. Its only job is cheap acquisition — which requires a pool betting licence.

Why the margin is what it is. Margin is derived, not assumed. A bookmaker's edge is applied per selection, so across an L‑leg accumulator the operator's margin is 1 − (1 − m)L: at 5% a selection that is 5% on a single, 14.3% on a treble, 18.5% on a four‑fold and over 26% on a six‑fold. A £1 cap pushes a book towards exactly that mix, because a long-odds multiple is the only way to win a meaningful sum from £1. The favourite‑longshot bias pushes the same way independently: margin is applied disproportionately to long odds (Shin 1993; Whelan, Economica 2024). Both effects are documented; the split between them is not modelled separately.
Duty follows the Autumn Budget 2025 remote betting rate of 25% from 1 April 2027. Bets on UK horse racing stay at 15%, which is what the racing-share slider prices.