Through a partnership with Affirm, the warehouse retail chain will offer a payment plan on some online purchases. The Buy Now ...

This is not a false alarm. Costco now allows its members to use the installment payment app Affirm when checking out on its website.

A recent viral online discussion reveals which Costco products some loyal shoppers say they wouldn’t buy again — and why.

The new Buy Now, Pay Later option will also charge interest, with APR rates between 10% and 36%. A $500 purchase at 20% APR, with payments spread out across 6 months, for example, will cost $88.27 per ...