Without any substantiated evidence, I'd have to say that that looks like a hybrid. I've had some shady dealings with that particular shop, and it wouldn't suprise me. I did a search, and could only find two references to "Montejo" Tinctorius, neither with pictures and I find it pretty unlikely that a retail pet shop would have something that rare. Someone is welcome to prove me wrong, though.
The picture closely resembles the pics of I have seen of montejo morphs. It is hard to tell from the blurry picture, but I would guess it is labeled correctly. There is a large scale breeder producing these, so it is likely that a store would have some for sale. Either way I don't find it a particularly attractive morph.
I've never had any 'shady dealings' with LLL Reptile, but then again, the only animals I bought from them (my leucs) I bought in person. I haven't ordered any animals from them online, but I have ordered various supplies and everything worked out well.
I was talking to a friend who has been in the hobby for a long time, and theese are a legitimate morph, which were imported at the same time as inferalanis and alanis. They are larger than alanis but smaller than inferalanis.