I remember how difficult it was to setup Wine and to play a game, Valve made it much easier. I remember some games even with Wine, wouldn't run with complete compatibility or wouldn't work. Installing Steam on Linux is pretty easy.
They have been 49 cents per pound in the grocery store in NY, both where I grew and in WNY for as long as I can remember. They have got to be at a loss if you consider they don't adjust for inflation or gas prices, etc. Milk does this too if I'm not mistaken, a lot of grocery stores use that as a customer lure as well.
I did something similar to bypass Verizons $5 per month surcharge to tether. I think it was a different variable I set though, not tether_dun_required. I think it was something like don't check if the tether enable bit is 1. I haven't tethered in several years and several Verizon plan types though.