Wheres a good deal on these?
Are the cheap after market ebay ones ok?

 

Depends on the one you get from ebay. Some I've heard are pretty bad. Two people have gotten a bumper from this one seller and it fit well. I got a fender from them and it is pretty close too. So from my (limited) experience with them they seem to be ok.

Downside to any aftermarket is it won't have Camaro stamped in it (due to licensing).