I could always build my case in the social lounge for rather cheap I guess
Truthfully though, there are great cases out there that offer sufficent cooling, but you can't skimp on price that much, since the best cooling cases are always a bit more than the standard 'good looking' case.
That see through one, I don't like one bit...eughh.
The one Voodoo Child posted looks alot better and will probably perform well too, but it has got a rather weedy power supply, so that'd need updating.
Thermal take cases are very good, but they don't tend to be very cheap...