They are not healthy, and very thin. I would pass.
While I'd agree here, I'll still say they are the most active dats I've seen. EVERY SINGLE TIME I see these things at the Lfs, they are laying at the bottom of the tank. If anyone ever started a
"What's the big deal about this fish?" thread, this is the fish I'd ask about. Definitely not an expert here, but if I really liked them I may try to negotiate them down a bit more, I mean you could say they DO look sick, (really hard to say bc lfs fish are always thinner) I'd guess your buying a few, then if it worked out, Id quarantine them a long time.
Nice to see ya blades, it's been a while