you got windows, right?
you probably have the R134, since 93's have the older units. I can't remember when they made the change to R12 (actually, I thought it was R34

h: )
but there's strict regulation on freon, especially the older stuff. You see, you can fill trash bags full of the stuff, and inhale them, and not only get high, but kill alot of brain cells at the same time. Maybe you can go to Mexico and get some (seriously), but other than that, you'll be paying about $100 or so.
now, if you have the newer freon, it'll be a bit cheaper. This stuff doesn't get you high like the older stuff. Actually, if you inhale this shit, you'll die rather quickly. But I think the cars with the newer freon are 96+.
I've noticed the newer freon sucks. It's not as cold
and no, I don't inhale that crap