The standard joke at this end of the world (and mine had it written on by the original owner) is to call them UN-Reliants. That being said, they last forever and are actually fine for the hobby woodworker.
The thing to know about Reliant is that it's a Tiawanese knockoff designed to sell at very low prices. Everything about it is solid but tollerances are pretty loose and quality is very consistantly mediocre. Every once in a while, you get a machine that just happened to come together perfectly in all of it's small defects, but that is the exception. Basically, good for a home shop and work that doesn't need alot of precision. Not proffessional woodworker quality (usually).
An example would be my reliant BS. The hole in the casting for my blade guide bar is approx 2degrees off vertical, causing me to have to adjust the placement of my guides every time I change the height. The drive wheel (bottom) is also just off horizontal, resulting in the blade riding to the front of the wheel. Can't be adjusted. Also, because of this, when I set the top wheel so that the blade rides the center of the boot, the wheel touches the metal casing intermittantly, causing an awful racket. Finally, the tension spring is so weak that the saw won't run more than a 1/4 inch blade.
Solutions: I set the guide at top height and it stays there. New tension spring. 2hp aftermarket used motor (free). Riser. Home built milling table. Bent the top casing so that it doesn't touch. Bits and pieces of aftermarket improvements. Also, I have to break it apart about once a year and do touch up work on motor, bearings, guides, etc.
Total cost: $175. Result, excellent milling saw that is never used for fine work. All in all, a very good value.
So that's what your looking at for the dust collector. It will likely be loud, less powerful than you think, need some aftermarket improvements/modifications (bigger ports, nicer ducts, felt bag, etc) and require regular maintanence. That said, $150 is an excellent price for a home shop dust collector and I'd buy it in a second if it was near me.
Dietrich