I had PRK done about a year and half ago. My vision wasn't that bad to start. I'm at 20/30 in my right, 20/40 in my left now.
The healing process is a lot longer with PRK than it is with LASIK. People get up out of the chair seeing 20/30 at least with LASIK. It was a month before I could get that with PRK just because of the nature of the procedure. The whole thing including pre-op tests, which were very expensive was just shy of $4500.00. Was it worth it? Totally... Your myopia doesn't sound to severe so you could be a great canidate for LASIK which is actually coming down in prices a lot lately. Check out at least three facilities and go with a facility that will let you watch them do a procedure.
Post op you can expect a lot of daily eye drop use, some mild "grainy" feeling, almost like sandpaper in your eye, and possible HALOS at night around lights. Nothing severe. That's for PRK or LASIK. There are some other nasties I had with PRK but you shouldn't have to deal with that because LASIK would be a better road for you.
Good luck!