this all varys on how many dents where they are located and the severity. If they are located on body lines and you want to keep the body line then its going to be more expensive. If they are located in front of a moon roof, they will have to remove the moon roof/sun roof. If they are located close to any emblems or trim they will have to remove that as well. It isnt all too hard to drive to a local body shop and get a 10 minute estimate. I used to live in SD and I know there are plenty of shops around that place, as well as mexican worked so it will make it even cheaper for you if you choose one of them.
My suggestion to most ppl is to take it to a local technical/trade school to the autobody department and let them fix it, all you have to pay for is the supplies, no labor amount. All the students are monitored by professional teachers from that trade so dont be scared of the ROOKIE remark your making in your head.............