If it's 5Ghz, then it will be a little more than just a 2.4 Ghz. Second in a situation were wired isn't as much an option, one has to consider what are the other choices, and their cost? Wireless? We first of all don't know if other USB adapters will work, making moot the cost differential compared to others? And the other is power-line, which costs quite a bit more than $10 (but does have advantages over wireless).