I have lots of L114, L600 & L427 and only consider them color morphs of the same fish. I've had individual fish with all possible combinations of the supposed distinguishing characteristics. I keep them all because I like the differences.
$5000 !!!!!! They would have to be more of a pleco nut than me (or stupid rich). With my luck someone would offer it and the fish would start changing back before I could ship it.