In general, these three year extra warranty deals cost almost as much as the item did in the first place!So why not just risk it and if it goes, buy a new one.
I got caught out, recently, thinking that the Law stated that a thing should work for two years. I had bought a widescreen TV and 2 years 3 months after in failed. What I did not know is that the EU had extended the figure to FIVE years. So I could have claimed a new TV. I just bought a bigger one from John Lewis who clearly stated the five year rule.