When would I file a 2nd state return?

My wife and I live and work in Oregon but my wife makes about $850 in Minnesota every year in July as a camp counselor.  We get a w2 from Minnesota and it looks like this:

wages $850

Federal tax $93, S.S $53,  Minn state tax $41

 

The question is Turbo Tax wants $44.99 to do the state return.  Our AIG is about $92k   We have traditionally ignored doing the state return since we think it would be a wash or we would lose a few bucks doing it.  Is there a way to do this without paying for the extra state and entering things online so I dont have to do any calculations?

Thanks!!