You do realize it has everything to do with the topic. Fraud. Although Best Buy might not be managing a warehouse of used Mac Parts and making money off of "in warranty" and "out of warranty" items.....they are making money off misleading consumers about the warranty their computer carries.
I don't think what you describe Best Buy doing is fraud. It's just retail.
I loathe Best Buy and would never even think of buying anything from them, but I do go into the stores sometimes to check out products. I know for a fact their iPod service plans are cheaper than Apple's (at least as of a year or two back when a relative picked one up) and I'd be surprised if their desktop/laptops plans were anymore. Yes, the service is probably much worth than AppleCare, but I can't really judge since I'm not familiar with it.
Plus, the kid trying to push their in-house plans is a minimum wage slave who probably gets a few bucks kick-back on any extended warranty he sells (and nothing on AppleCare) so give him a break.
The real tragedy in the scenario you describe is that anyone would go to Best Buy in the first place to buy a Mac. Once they decide that's who they want to give their money to (when they could have gotten the same price at an Apple Store or Apple.com) then any way the retailer takes advantage of them from then on is their own fault.