Ive been watching B.Clarks Facebook for a long time and I'm not impressed with his Ball Pythons or his prices...Sorry Bob. His retics and bloods are top notch.
I have had great experiences with many breeders:
Eugene Bessette at Ophiological Services (he has some great snakes listed on his Facebook and kingsnake classifieds)
https://www.facebook.com/pages/Ophio...23617861038825
Jon Van Laarhoven at Precision Pythons (he has some kingsnake classified ads or check his website)
https://www.facebook.com/PrecisionPythons
Definitely check out http://www.reptilering.com This is the only auction site I trust. The breeders selling on there are hand picked and you get quality for sure and more snakes are added all the time.
If I can offer one more suggestion if you plan on breeding at all down the road.... buy a female first. If your set on a male then get a combo that has a recessive gene in the mix (ghost/hypo keep your snake looking cool into adulthood).