Capitalism at work here IMO -- for $10 he alleges to be able to send you everything you need to know to get started trading, downloading and so forth. For someone who does not have the time or patience to scour the Internet looking for all the right information, it might be worth the $10. Sure, most of us here know how to get the 411, but some folks are less tech savvy.
So, if you are the 50 something executive father of a teen age girl who mentioned that she'd love a copy of San Diego 2 on bootleg for her birthday; and you know you don't have the time to dig up all the 411; would you pay $10 for the right info and trader leads? Perhaps you would, assuming the seller has legitimate accurate info and a few good trader sources, for about $13 you buy the info, complete a B & P trade, AND make your daughter's birthday wish come true.
For some people, time is worth $$.