Lesser known tax site Taxhawk is one of the cheaper ways of getting your taxes done.
I used it last year and again this year. Just as good as the others, imo, although I didn't have anything more complicated than some interest and dividends. With last year's data automatically imported, I think I spent less time doing taxes this year than ever before.
Federal is free. State is $14.99 but drops to $11.25 with coupon code taxhawk25.