Do you know of a good pre-built classified ads system (has to be in PHP)? We have a client that wants to use something that is pre-built and we can get set up with limited problems. We don’t mind paying for something that is pre-built.

It would be preferable if it had all of the functionality for taking payments, but that’s not critical. Thank you. I’ll share our own research next month (after we review and search on our own).