I think this is a clear cut case of you get what you pay for.
If you bought those snakes from a reputable breeder, then chances are, they are SK Axanthics. I have seen some that I knew were Axanthics and would have sworn they were normals. Maybe they are going through a shed? The SK's have some very cool stuff, but their Axanthics are not the nicest looking for the most part. I would buy Het VPI over visual SK Axanthics. If they DO turn out to be Axanthics, and you breed them, I hope you get nicer looking and silver babies. Otherwise, you might be stuck with a bunch of Axanthics. Now, that is all bad news, but I have some good news. I think the SK line might be the best line to make True Ghosts with, so, maybe you go that route.
Dave