You'll also be paying for all of their advertising, of course, for services that didn't used to need advertisement, but thanks to the totally efficient free market, you're now paying companies billions to watch their commercials.
Look at the private services you buy (insurances, products, etc). How many of those products have you seen advertisements for? Personally, I've almost never seen any, since I shop by researching prices and services myself. Likewise, when was the last time you saw an advertisement for Google, one of the biggest monopolies we have now?
And for duplicated efforts by competitors that erase the economies of scale enjoyed by government services.
Why would economies of scale not exist in the private market? Especially without government busting up monopolies?
I think the entire government should be privatized. Chuck E. Cheese could run the parks; everything operated by tokens. Drop in a token, go on the swingset. Drop in another token, take a walk. Drop in a token, look at a duck. - Ron Swanson from Parks & Recreation
Both of my local state parks charge for parking at the entrance, with parking fees going to pay for park upkeep and maintenance. What's to stop a private organization from doing the same? (even if they have to raise the fees a bit to cover lack of government funding, and maybe add fines for littering)