There are plenty of corns still for sale. Some that are just now hatching most will have second clutches soon. I have found it is better though if you prepay for a specific snake you want out of the following years clutches. If this is done I usually give them the best of what I am selling, but thats me, not sure about everyone else. As far a butters they do vary, but not as much as other morphs of corns. They vary mainly in the intensity of the yellow. They range from a yellow snow to a carmel color yellow. Your best bet is to buy from a good breeder (ie cathy, don, rich or myself(lol)) or go to a show and hand pick, but just because a baby looks good you still don't know what the adult will look like. It's kinda just luck.