Ok, for those who may be interested, DWV PVC fittings are available at Mountain States Plumbing Supply, both in SL and in Layton. I learned that they are popular in the east, but not here, and I also learned that they are almost as cheap as the ABS (within a quarter or so). They claim that since PVC is solid core, it dampens water noise more than ABS pipe. Good to know when you're building a basement sump!
The advantage here is that they readily adapt to other common PVC fittings instead of mix and match ABS with PVC (as I almost did).
Thanks Jon and Mark!