Affirm looks a bit expensive here, with fair value around $70 to $80, even though buy now, pay later should keep taking share from traditional credit cards. BNPL limits borrowing to when it is needed and cuts off borrowers who do not repay, lowering risk for both user and lender, unlike credit cards with large limits. Affirm is growing over 35%, and its balance account pays over 3% interest through a linked debit card that can also use BNPL. x.comÂ