It's a quality imprint, though almost everything on ugEX is pretty far out/rackety. I have most of the catalog and never encountered any clinkers, though "To Live and Shave in LA 2" was pushing it (absolutely bizarre). Luckily, there are preview links for almost every title so you can get an idea of whether it's something worth dipping into.
If you go for the "grab bag" idea, you might want to be prepared for a few post-punk/noise CDs to be thrown in as well (which I tend to like) - but hey, it's a good deal.