In this context we are talking about a merchant selling a product through a marketplace platform, not a purchase. Signing up as a merchant with a just a debit c

In this context we are talking about a merchant selling a product through a marketplace platform, not a purchase. Signing up as a merchant with a just a debit card is potentially a lower barrier to entry, especially for one-off, occasional situations. The alternative isn't your credit-card, it is your bank routing and account number.