This is a poorly worded question as the op doesn't actually answer it. This is not a matter of cost as this fully negates the cost of the whole required infras

This is a poorly worded question as the op doesn't actually answer it. This is not a matter of cost as this fully negates the cost of the whole required infrastructure, but a matter of price tag. More like "In the US how much one could be charged on top of internet access to be granted access to a limited selection of limited online digital libraries of stuff". IMHO this is severely limited, us only, online only (mostly), broadband only (mostly), limited libraries, etc. this is subpar compared to what people2people file sharing can offer which is far from being unlimited nevertheless.