The summary.
THE CHEAPEST METHOD IS NOT CHEAPEST IF CUSTOMERS ABANDON IT
Measure completion rate per method and device, and test the whole flow on a mid-range phone on mobile data.
Offer transfer first here — it is cheaper, more familiar and completes better.
UNEXPECTED CHARGES APPEARING LATE ARE THE COMMONEST CAUSE OF ABANDONMENT
And after a failure, preserve the order — making the customer rebuild the basket loses most of them.
SEPARATE INVOLUNTARY CHURN FROM VOLUNTARY
They have entirely different causes and remedies. Grace periods, retries and card updating address one; the product addresses the other.
Difficult cancellation generates disputes, complaints and regulatory attention.
CALCULATE EFFECTIVE COST ACROSS YOUR ACTUAL METHOD MIX
Including failed transactions, unreturned refund fees, disputes and settlement delay — not the headline rate.
NEVER DESCRIBE YOUR BUSINESS INACCURATELY AT SIGNUP
Discovery later is treated as a breach, not a mistake — and account suspension means no revenue and withheld funds.
Warn providers before large campaigns; volume spikes trigger risk reviews.
