: While you cannot use a paper check for Walmart.com orders, you can pay via e-check or use the "Pay with Cash" option during checkout to complete the transaction at a local store with a personal check.
: You can link your checking account to your Amazon account for direct payments. things you can buy online with a check
Checks are often the standard for larger or recurring online payments: What is an eCheck? - Chase Bank : While you cannot use a paper check for Walmart