I got rearended and the hitch caused a similar issue.
My damage was on both sides of the Jeep and the floor is about 1.5" higher in that area than it should be.
Insurance deemed it 'totaled' as the cost of repairs was going to be way to high. :tear: I did get a quote from the shop for $600-850 to put it on a frame machine and straighten it, but that would only be 1/4 the repair. The area would need to be re-enforced and braced to be properly repaired.
Mine isn't going to be an issue anymore as I bought it back to cut/chop it and she's all trail-duty now. That section won't even exist anymore as it's getting linked.
Picture of my damage on one (the better) side:
Given that your picture is not the best I can't tell how bad yours really is. Assuming its not as bad as mine, but still warrents this post I'd would have to disagree with those that said "just drive it", that is totally, IMO, wrong. If you can't fix it to stock or better than stock configuration, I'd go elsewhere. It's just not worth the saftey risk in my eyes.