Do you think it's wild caught? Could make for a project to see if something is going on there. At first glance it does look like an interesting patterned normal but this whole morph market started because guys noticed snakes looking a little "different" and breeding them to see what happens.
Where about in SC is the store? I pass through SC every so often and visiting an honest to goodness reptile pet store instead of a big box store would be a treat.