If you can get healthy babies, you can usually sell them for $100 or more, depending on location, colors, etc. This does not include shipping which is negotiated separately and is at least $75 most of the time.
On the other hand, while Red-foots are easy to breed, they do need to be several years old, in good health, etc. before it happens.
Well i have 2 now.. One of them i can identify as a male he is a little over 5 inches.. The other which i am hopeing is a female is about 5 inches exactly
At 5 inches, unless they are cherry-heads or something, they are on the small side of breeding. You should have time (a couple more inches of growth generally) to do research and get things ready.