I became an affiliate partner for Staples UK simply because I was turned down by Staples.com in the US. Not sure why, but going with Staples.co.uk is more bang for my struggling buck.
For every 10 British pounds I make from Staples.co.uk is about 21 US Dollars. Not a bad rate of return at all 
You may want to consider dabbling in affiliate marketing with overseas, European cash exchanges.
The SPAM from Staples.co.uk goes on to tell me that this week is Promotional Week. They are offering great promotions to all customers throughout this week of which they would like to offer out to all affiliates to promote. Promotions running are as follows: