[gervase]

One major caveat that I just recently discovered - purchases made through Amazon are only covered if they're actually sold by Amazon, not through a third-party reseller and fulfilled by Amazon.

If you change your purchasing habits to choose items only sold by Amazon, you could quickly exceed any possible savings by paying the higher direct price than you'd pay for the same product (with the same shipping time) that you'd get from a third-party merchant.

Just an FYI if you're thinking about signing up for the service.