Hey guys,
I'll be going to COMP as well. Since I'm very familiar with the area (parents' house only 20 min away), I started looking at housing this past week just to get an idea of things. If you want a pretty good area, try La Verne and San Dimas where you won't need to take the freeway. Others stay in Claremont (10-15min away), which is more costly, and others try Pomona which is less costly but not too nice. On average, housing can start as low as $595/mo (Pomona) to $950/mo (Claremont) for a single studio to a 1 bdrm apt. COMP should be sending more info on housing and a list of those who are considering roommates once they know who'll be attending for the Fall. I did inquire with them already.
Hope this helps, and if you need any more info just let me know.