I've used FreeTaxUSA since 2014 and I've never had to pay for federal, but I have had to pay something for state file. I think it's around $20.

They are free for federal electronic filing, and charge a small fee for state filing.

Free as in the land of the free, not as in beer.

Its free for state as well if you qualify

It is free for federal taxes. The only thing that you are paying for are state taxes.

It's free for me, but I don't have state income taxes.

Well... free is cheaper than not free.