I was surprised by this number too - and I’m pretty sure it’s a clever wording trick to inflate the percentage:

> equivalent of a 26% higher sales tax than premium credit card users shopping at the same store.

I do not think the sale price is increased by 26% - which doesn’t square with a 1% to 3% fee - I think they pay approximately 26% more in “sales tax” so you’re paying 26% more than the 7% tax.