I've used Turbotax for 15-20 years now, and the cost seems to be fairly consistent the entire time I used it, between $60-75 depending on the paperwork I had to file that particular year.
Note to DUmmies, you DO know if you don't make above a certain amount of money, you don't have to file, right? I figure most, if not all, DUmmies would qualify.
But then again, DUmmies would pay $50-100 dollars to file just to get back a $25 refund...
Mine is simple enough, that I use the free H&R Block online, but I always do it by hand first. Illinois has a simple form and you file online at the state website. However, since Illinois needs to keep people's money, they aren't allowing people to file yet. I'm sure they won't extend the deadline though.