Definitely do your homework on the genetics aspect of this hobby. Pinstripe x Albino = Zero Albinos

World of Python has a good genetic wizard and great pics of morphs http://www.worldofballpythons.com/

Owal Reptiles is good as well http://www.owalreptiles.com/

Honestly, you should stick to something that is appealing to you not what you can get a good price on. Good luck in your quest I am sure you will pick up some great bps.