Well then, I guess you and I don't make buying decision the same way... and your analogy is rather insulting on many levels.
I look at EVERYTHING before I buy, be it a head of lettuce or a car... and yes, I do look under the hood.
Here's where I come from...
I play guitar, I buy many and would not think about buying a guitar without trying it first... yes, that means taking it out of the case (the box if you will), looking it over for any kind of defect and giving it a whirl so to speak. Now I have bought $200.00 guitars and each one of them have received the same attention to detail from me, that my $3000.00 one's do...
So, if you assume that everything is ok with a product, any product, right out of the box, well you get what you deserve.
I believe it's called... buyer beware!
HH