A week or so before Christmas I had a bit of personal and stocking-stuffer shopping left to do. So I headed to Office Depot armed with my "$10 off a purchase of $50 or more" coupon.

My purchases looked something like this (I'm approximating prices and leaving out tax to make this example simple -- but how the discount was applied is 100% true):

Plastic chair mat: $25
Desk accessories: $15
Stocking stuffer #1: $5
Stocking stuffer #2: $3
Laptop table: $20

Total: $68