I wish I knew about this before. I've spent so much money at Amazon in the last 3-4 years that I think I financed the new NJ warehouse they are building (damn you Chris Christie, I don't wanna pay sales tax). Books, audio CDs, Christmas presents, Magic cards (please no jokes, we all have our guilty pleasures), DVDs, small appliances and so on (ad nauseam).
From now on I'll be ordering through the site.