I love stuff like this.
I ran out of my crappy cheap printer paper for home use. Went to Staples today - they had a deal where you could buy *any* ream of paper -max of two reams for this deal, any brand/type - and you get the cost back 100% in Staples Rewards. Nice. Really nice. I don't mind waiting a month to get paid back.
But then I noticed that the swanky Hammermill Ultra Premium inkjet paper also had an online rebate of $3 a ream. So, I bought two reams, and in the end, Staples will be paying me $6 for having bought the nice paper.
It pays to be a savvy customer. Also pays to just walk into a deal like that by accident. Which is pretty much what happened here...