I guess the consensus here is that the plec in question is most likely not a zebra.
Of course it's not a zebra, it's a fish!

once again we're in a situation where similar common names have led to confusion. "chocolate zebra pleco" and "zebra pleco" are two very different things, a quick google search would have cleared that up, as would using L-numbers instead of (or as well as) the common names. I've got no idea if $20 is a good price for an L270, it doesn't seem bad though but if you're expecting an L46 you'll probably be disappoint.