Pam has been around for.fucking.ever. I've never used her to book but did communicate with her back in the day. Agreed website sucks, but she's legit, or at least was previously.
Its legit but you she mostly has retire pornstars for like 1500. Other agencies have modern pornstars for far cheaper and if you contact the pornstars on her site directly they will charge you anywhere from 300 to 1000. Skip the middleman if you can.