InstaGC is a rewards site you can use to redeem instantly for Amazon gift codes (and all kinds of other gift codes). With this site, it's possible to earn money for doing all sorts of things which include short tasks, surveys, watching videos, listening to music, and more. What I love most about this one is that when you do redeem, there is NO waiting. You just ask for your code and it's there waiting for you on the next screen. It's also possible to request a check for a cash payment, but you will have to wait several days for that to show up in the mail.
What has made PayPal so popular among both consumers and merchants, or clients and contractors, in this case, is that it is secure, allows for international payments and payments can be received almost instantaneously. When someone sends you a payment it arrives in your PayPal account within minutes compared to days when receiving an ACH deposit in your checking account or check by mail.