What is a money order if I were to ship an item via COD?

Question

does that mean I use cash - how does the process work?

Answer 1

Shipping an order COD means whoever recieves it on the other end is paying cash when it's delivered.

Everything you need to know from the post office is here:

http://www.usps.com/send/waystosendmail/extraservices/collectondeliveryservice.htm

Answer 2

Money orders are nothing more than a check that bank or other financial institutions issue. You take your cash to a bank (or other institutions) and buy the money order in the amount you want.

It used to be the safest form of making/accepting payments, but now there are fake ones around.