Safeway

I just came from the deli at Safeway.  I ordered a vegetable quiche, warmed, please. 

The young lady said I would have to pay for it first.  Strange.  A customer chooses the food, then it is warmed, and then you pay.

She explained that customers will ask for warmed food and then walk out of the store without paying.

What dumb logic.  Customer can just ask for unwarmed food and walk out without paying.

Who comes up with these illogical policies?