At the end of a bad week, a growth lead studies the dashboard: challenge sales are up, breaches have climbed, and second purchases look healthy. The headline revenue is reassuring. The contribution after ad spend, refunds, payment fees and support time is not.
That distinction matters. A trader who buys another challenge after breaching can be a valuable repeat customer, or an expensive acquisition counted twice. To tell the difference, separate the economics of the first purchase from the economics of the next one, then follow each buyer by cohort.
Read the breach week correctly
A breach is an event in the product journey, not proof of either retention or churn. Some traders leave. Some return for another evaluation. Others buy again because the first attempt ended quickly, but do not remain active long enough to create durable value.
Start by agreeing on the denominator. A repurchase rate among all challenge buyers will differ sharply from a rate among breached buyers.
Keep these groups separate, and report the interval from breach to next purchase. A 30-day window is useful for operational decisions; a 90-day view catches slower returns.
Track, at minimum:
- First challenge purchase date, offer, price and acquisition source.
- Breach date, breach reason and days from purchase to breach.
- Second purchase date, product, discount and payment status.
- Refunds, chargebacks, support contacts and any funded-account progression.
Do not treat a second checkout as a retained trader by default. A repeat buyer who breaches again within days may be generating sales while adding support and payment costs.
Conversely, a trader who takes time before buying again may have lower near-term revenue but better activation. The distinction changes how campaigns should be judged.
Price the second challenge as a separate transaction
Measure the eligible cohort
Build a cohort from traders who breached, then calculate how many make a second purchase within a set period. Exclude failed payments and refunded orders from completed purchases.
Show both the raw rate and the rate after refunds or chargebacks. If a discount or re-entry offer was sent, flag it separately from an unprompted return.
Typical planning ranges for second purchases vary by price, rules, geography, traffic quality and the firmness of the offer. A 5-20% repurchase rate among breached buyers within 30 days can be a useful broad range for scenario planning, not a universal benchmark. Your own historic cohorts are the decision-grade comparison.
Calculate contribution, not gross sales
For each repeat order, subtract variable costs before calling it recovered revenue. Include paid acquisition where it generated the first customer, payment costs on the new order, discounts, refunds, chargebacks and incremental service work.
Do not assign the first-order acquisition cost to the second order twice. Instead, show it in the lifetime contribution view, alongside the revenue and costs from both purchases.
A simple calculation is: net repeat contribution equals second-order revenue, less discount, payment fees, expected refunds and chargebacks, variable support cost, and any incremental reactivation spend. Add any payout or evaluation liability only where it belongs in the firm's accounting model. Challenge fees are not a reliable proxy for profit.
Build a cost stack for each buyer
Use ranges to find the sensitive inputs
The ranges below are broad market planning estimates, not audited figures for any named firm. Offer design, payment mix, traffic source and operating model can move them materially. Use them to spot which inputs need measurement, then replace them with your own cohort data.
| Metric | Typical range | How to use it |
|---|---|---|
| Challenge price | $50-$300 per order | Compare like-for-like account size, rules and discounts. |
| Paid acquisition cost | $40-$200 per first buyer | Separate by channel and include creative or agency costs where relevant. |
| Payment processing | 2-5% of transaction value | Check by payment method, region and currency conversion. |
| Refunds and chargebacks | 1-5% of orders | Use actual losses, not requests alone; review by offer and source. |
| Variable support cost | $3-$15 per order | Estimate handling time, tooling and escalations, not just ticket count. |
| Second purchase within 30 days after breach | 5-20% of breached buyers | Use as a scenario range, then compare with your own cohort rate. |
Keep acquisition and retention views connected
The table helps test a common trade-off. A high-cost campaign may still work if first buyers make a profitable second purchase.
A low-cost source can underperform if its traders breach quickly, refund more often or need substantially more support. Report first-order contribution and 60- or 90-day contribution by source. Avoid letting repeat sales conceal a weak first-order margin.
For a weekly view, include these cuts:
- New buyers by source, offer and country.
- Breached buyers eligible to repurchase, with 7-, 30- and 90-day rates.
- Net revenue and variable cost per buyer across both purchases.
- Funded progression and later activity, kept separate from challenge sales.
Consistent tagging and reporting make this easier. An AI marketing workflow such as prop-firm.ai can support campaign analysis and content operations, but the underlying event definitions and commercial data still need to be sound.
Decide when a repeat sale is worth pursuing
A second-challenge offer can improve customer economics, but it also has costs and conduct risks. Discounts may bring a buyer back sooner while reducing contribution. Aggressive breach-triggered messaging can feel exploitative, especially if the trader is still frustrated or does not understand the breach reason. Keep the offer clear, optional and consistent with the firm's rules.
Before expanding an offer, check:
- Whether the breached trader received a clear explanation of the breach and account status.
- Whether the second purchase remains profitable after discount, payment and support costs.
- Whether repurchasers activate and progress at a different rate from first-time buyers.
- Whether the result holds across sources, regions, challenge types and cohorts, rather than one promotion.
Use a holdout group when practical. Compare eligible breached traders who receive the offer with similar traders who do not.
That estimates incremental purchases, rather than crediting the offer for buyers who would have returned anyway. Review complaints, refunds and support volume alongside sales. A lift in checkouts is not a win if the offer creates more disputes or worsens trust.
For firms considering how marketing workflows fit their team, the prop-firm.ai pricing page sets out the monthly product cost. Keep that fixed cost separate from per-buyer economics, then test whether the workflow changes execution time or reporting quality using your own records.
Before the next weekly review, calculate the 30-day post-breach repurchase rate for your last three eligible cohorts and compare it with the typical 5-20% range.
Frequently Asked Questions
What is a typical second-challenge purchase rate after a breach?
A broad planning range is 5-20% of breached buyers within 30 days, but offer, price, rules and traffic mix can shift the result. Treat it as a comparison point, then use your own cohort data for decisions.
Should a second challenge sale count as customer retention?
Not on its own. Track the second purchase separately from continued activity, funded progression and longer-term retention. A repeat checkout can add revenue while the trader still leaves shortly afterwards.
How should a prop firm calculate second-challenge profitability?
Subtract discounts, payment fees, refunds, chargebacks, variable support costs and incremental reactivation spend from second-order revenue. Report that contribution alongside first-order acquisition cost and later trader activity.
