Extended warranties are a good example of how it is a matter of $$$$. If you are willing to pay more, what is basically an insurance company will guarantee the product for a longer period. I never buy the extended warranties. The very few items I have paid for repairs over the years is easily not more than what I would have paid in advance for an extended warranty.
A good friend of mine feels differently, but he is a heavy user. He had a high end VCR break on him after 4.5 years of use. He had extended the warranty twice to 5 years. The model was discontinued and they could not get the part for it, so they gave him a brand new current model for a replacement.