My Dyson died a few months ago. We called the Dyson number and they set us up to have it repaired for FREE at a vac shop right across the highway from us. They didn't ask any questions about when or where we bought it.
BTW, it is the purple "Animal" model, I got it soon after they came out, the receipt has been lost and it turned out to be a broken belt. The repair shop also gave it a complete cleaning for free too.
I recently forked out $399 (list price $499 - 20% off coupon from Bed, Bath & Beyond) for the Dyson DC 25 "Ball" (the biggest of the current "Ball" vacs) and love it. Now we have one on each floor.