I think there's an old post on that same fish. it was going for like $500 but guess he dropped the price. after 5 years and is only 4.5-5" something is not right with that fish...
this guy has been selling this fish for quite some time. Started out at $500 and I guess he's decreasing it due to lack of interest. I wouldn't pay more than $100 bucks for a fish less than 14" personally. Also I think that is not an albino pygo at all. I think it's a Myleus asterias or other characin species.
He's definately small at 5". From the pic it definately looks more Pygo than M. asterias.
I want em but I'm worried about the health of an albino, especially at $300.