It does sound like Raidmax, or some other generic BS. For 60 bucks, you can get this:
It has a cheap feeling to it, but the design outtside, the fans are illuminated. It seems like it has a dust filter too. Best of it, if he doesn't seel the PSU with it, you have one in there...probably not the best, but at least, there's one.
If he said "Screw you", then he can "Screw himself". LEt him rip off someone else. You did a good choice to ask here.
The case you pointed resembles this:
But that case is much better, and the disign looks much sharper than that plastic thing.