(Even for the small part of their business funded by credit cards, there's a $500 per customer lifetime exemption, and 3% minus higher fraud rate and 2-2.5+% CNP processor and interchange still puts their revenue at less than a small team's salary with 100% credit cards, and probably less than $100k/yr revenue on credit cards overall.

They're obviously being bought for team, technology, and growth potential; current customers are just traction, not revenue.