Note that statutory warranties (of fitness for purpose) are much better in the UK and Europe than in the US. This particularly applies to anything bought mail order. But the shops (particularly the Dixons Group) still try to sell you a near-useless shop extended warranty.
That sounds interesting. How much more are the warranties worth, do you think? My little essay is necessarily biased by my US perspective; maybe the point is even stronger for you foreigner-types.
I don't know of a comparison between US and UK. I do know that if you've been messed around and the shop won't make good on it, Trading Standards have a fine selection of very effective LARTs, and if you bought something mail-order the distance selling laws kick in as well, which are remarkably consumer-favouring. The consumer can, with sufficient persistence, apply the fine British bloodsport of bureaucracy to a satisfactory conclusion.
Extended warranties sold by the shop are pretty much useless - if the offered warranty is a year and it breaks in 366 day...
I've sometimes seen people say that they need concrete simple examples of ideas like expected utility and Bayes' theorem. So, continuing in the same vein as An Abortion Dialogue and Case Study: Melatonin, I recently polished up my shorter-but-hopefully-still-interesting article on Console Insurance.
It's basically a short discussion of how back of the envelop estimates show console insurance (and by extension, most warranty extensions) to be a bad investment.