Staples: 15% Off Printable Coupon

Here is a 15% off printable coupon valid for any purchase at Staples through March 23rd.

It only excludes computer purchases.

These are usually helpful to save money on ink, because if you sign up for the Staples Rewards program, you get $3 for every cartridge/toner you recycle, plus 10% reward on your purchase (right now it's 20%!)