well i went around to the local shops and they all wanted between $15-$25 to have the fuel pressure tested. I asked one of the shops why they are charging $25 to do a simple fuel pressure test. The guy said, "well we normally charge $80 for a diagnostic and plus my guys time to do the test.". I said "ya, well it only takes you 5 minutes IF that to simply hook the gauge up to the fuel rail and your going to charge me $25 for that, no thank you." He goes, "well we could work on the price, probably go down to $10-$15 depending on the difficulty." I laughed and walked out.

You can rent a fuel pressure tester from Autozone.