Well I guess the guy overstated when he said $10 but, believe me the CPU arent that expensive as Intel themselves were selling the 4770K for $95 as a part of their retail edge program. Considering the 4770K is like $300 on Newegg, it is safe to assume most of the business owners do make appropriate profit. While I am against returning bad OCers, nobody is loosing money if a few of them are returned. Just a little less profits.Since you insist "The cost of the actual silicon is generally less than $10" then what pays for all the fab equipment, R&D, programming and research? I guess that's all free too.
You will be really lucky if you hit 4.7 Ghz looking at the current state of Haswell.Which means if my 4770K (assuming I end up with that as I'm still waiting on the rumored Silverstone 550 watt SFX PSU to become available before buying the rest of my parts for my M1 NCase mini-itx build) fails to get 4.7GHz+ stable I'll probably throw a $h1*fit.
You've had a good experience in the past so you have nothing to complain about, but that doesnt mean people with bad experiences cant complain as their experience is different then yours.