How did I end up paying more than 100 to file when my taxes are the easiest they can be, and am expecting only 137 from fedral...is it fair to take 7/8 of my return?

Offered free fedral, state. Free filing is what this site offers in their emails and commercials,  so I've seen it 1000 times. When I get here, I have to upgrade 3 times, still have not been able to talk to a human and end up with a 21$ fedral return! What happened to free?