So in light of all the others I thought I would throw mine in too.
I've been promoting Amazon stuff for 4 or 5 months now, not heavily as I make the majority of my income doing stuff for clients etc... but I've been seeing some nice sales on a couple amazon sites and this is enough to make me want to really put some focused work into it.
Just got my first cheque for $600 in the mail I set my payment limit to $550 before they issued a cheque because I'm in Canada and I didn't want to pay a $15 charge on a $100 cheque but it turns out if you live outside of the states they don't charge the fee anyways! Good deal.
So after a few months and a little work setting up a few sites and promoting them a bit, $600. I'm HAPPY! And will definitely be putting more of a focus into new Amazon sites from here on out!