Would it be easier for you if you just changed the carrier from Interwebs to USPS?
Netflix sell you unlimited CD/s month, as long as you return one they'll send out another (there's some supply and sorting issues I believe but that's not the point)
USPS deliver what they're given as fast as they can, so generally you get something like a 3 day turn around on CDs.
Now USPS says "You know, you Netflix people are making more money than we thought you would, we'd like a piece of that. We can offer you a priority 3 day turn around your CDs for a small consideration, otherwise we might just experience some packet loss in the sorting room. Oh noes, your mail seems to be getting lost a lot, huh?"
Also in this analogy, USPS runs their own CD rental service...