See my signature for wheelsets. I have 20, 38, 50, 60, and 88s. Clinchers are all on the same rims as many other big name manufacturers and my prices are really competitive, especially when you consider free shipping. I'm also handling any warranty issues (where as a lot of other spec-importers basically leave you out to dry), and I will replace or repair any race-damaged wheel(s) for my cost + shipping (which is better than any body I've seen).
No, there are not a lot of options for new. If you're just looking for hoops, I can get those for you as well - contact me for prices (although you could buy my wheelsets and disassemble them and still come out ok than some over-priced big name rims).