Some people with credit cards might be concerned about their information being stolen, unauthorized charges etc. Actually it's generally safest to use a credit card, since there are protections against fraud. For people who have good credit, one idea is to have one credit card with a low limit and use it for online purchases of all types. One thing I would say NOT to do is to use a debit card that is hooked up to your checking account. Protections are less, and if there are problems, your money has already been taken. With a credit card, something was charged but not yet paid, so you're better off. Many online businesses will not ship COD, but some of the OP's do.