Should You Buy Cheap Airsoft Guns?

I know everyone has heard the old phrase about, “You get what you pay for”, but it seems like sometimes you really can get a good deal on quality merchandise. I want to purchase an Airsoft gun and I guess the problem I am having is how do you know ahead of time if you really are getting a good deal or if someone is pulling the wool over your eyes. I love to buy as much as I can online, but the problem I am having is that there is no way to know if cheap Airsoft guns are of good quality until I try them out. I guess the best situation would be an online seller that has a good return policy.