Tuacahn is worth the price of admission, and even worth traveling to SoUtah. Some of the local playhouses can do some decent stuff, it just depends on if you are a judgmental neanderthalian tool or if you can appreciate watching people do something most people would be afraid to try, even if they don't do it perfectly, while being entertained on a night out supporting a local business with people you care about.
The Terrace Plaza Playhouse in Washington Terrace puts on some nice plays. My daughter was in their rendition of A Christmas Carol and I really enjoyed the performance.
Go with an open mind and you might find you like it more than you thought you would. Go in there with the attitude of "ewww a play, ugh who would ever pay to watch one of these when I could sit home watching super-bad or internet porn over and over again for free instead" and you will pretty much guarantee you won't like it.
I say go, enjoy it, expand your horizons, don't be so uptight. Really in the end it is up to you.
I've been to several performances at The Hale Center Playhouse and have thoroughly enjoyed each one. I highly recommend them.