Every card is funded from the same wallet and used for the same benchmark purchase on the same day, so the only variable left is the card itself.
- Record the mid-market rate at the moment of purchase.
- Run an identical low-value transaction on every card, screenshotting the deduction.
- Subtract the mid-market cost from the deducted amount to get the gross spread.
- Deduct any cashback actually received to get the net cost.
- Log setup time, KYC documents requested, top-up speed and ATM terms separately.
Read the full testing methodology