[Objective]

Go to Google and search for playstation forums, join one active official forum and ask there. Do the same thing with a forum that specializes in hacking Sony/playstation/PSP products. Doing that along with the answers you might get in here should definitely give you a fairly good estimate of the money to spend and where you'll get the best service. Or just getting advice on simple shit you can to do that you might not only save money on, but might be a better option as well.