I checked the Kindle Return Policy again and found:
You can return your Kindle for a full refund within 30 days of the day you received it as long as it is in new condition and in accordance with our return policy.
Actually I ordered it at Sep 19 and received at Sep. 22.
It was broke and I called at Oct. 20 first thing in the morning.
So...that counts for 31 days? I'll give it 28...