You might have cheaper options available to you. Sounds like you're within a dental school. Call their Oral Surgery department and ask if they extract impacted wisdom teeth at the school. Most often they will have another Oral surgery clinic on campus where you will find OS residents working, and dealing with more complicated extractions, such as impacted wisdom teeth. You should also ask about their appointment procedures and payment options. The reason you should ask this is because some of them are walk-in only, and they see patients on a first-come-first-serve basis. In that case you should plan on getting there first thing in the morning, and you may have to pay upfront. Also, another caveat is that they will not put you under general anesthesia, and they will extract one tooth only, so you'll have to go back and repeat the process. And make sure to say you're in pain because most of these places only take emergency cases.
I'm getting embarrassed for my profession just typing all this out. There should be better options available out there for cases like yours. I know the whole process sounds awful and time consuming, I've been on both sides of it, but it may save you some money, and get rid of your discomfort. But shop around first and make sure that there is a significant price difference before you go in for that first extraction. Otherwise it's really not worth the massive hassle. Best of luck to you.