There is a difference between imported and wild-caught.

Imported ball pythons are usually raised in huge farms in Africa and obvious abnormalities are screened for potential morphs with a price-tag matching the 'potential'. They aren't going to accidentally give up an obvious new morph for the price of a WT. Sometimes the cost of these potentially new morphs is ridiculously high and do not prove out as genetic. One of the largest producers of captive bred Ball Pythons in the world resides in Africa-rumor has it: he runs a bit of a cartel there with muscle and enforcers and such to 'diminish' the competition in the surrounding regions...I personally would not want to give him my money...

Wild-caught ball pythons are a different story: but, again-the people who collect them are not stupid and are well aware of the value of unusual patterned/colored snakes in the International Market. Wild-caught ball pythons are subject to any number of potential medical issues and are historically much more difficult to keep than their captive bred offspring.

For these reasons I don't bother with imports or wild-caught. So many hidden genes floating around in captive ball pythons right now...breed a lot of them and you are bound to spot something unusual...