One of my problems with grocery shops (among others), is picking up the product whenever I evaluate an employee. If I ask the location of an item, it's usually something I actually want, and often buy the item. It just seems to validate and cover me from being detected as the little fink I really be.
I wind up with an assortment of stuff from throughout the store, and the total is always more than $9.
It feels great though, to get a huge discount on my grocery bill. If the total is $22, and I'm reimbursed $9 + paid $5, then I get all of the groceries for $8.