If you feel your ready to breed, and are able to properly incubate, care and provide for the babies, I'd buy a "breedable" female. I have found a few of them, that are Pets. The owner(s) just either dont have the time anymore or funds to care for them. As long as they are healthy, go for it.
Good luck either way...I'm planning on buying a "breedable" or close to weight female for my 1st try at breeding....I've done and still do a bunch of research everyday to make sure I'm MORE then prepared for whatever may come from breeding.