no no no don't give cash back , I maintain a place to stash that extra 5 dollars change i had left after i was given cash , it adds up i just bought another muzzle loader with 5 here 10 there sometimes only 2-3 dollars at a time , I don't keep it in my wallet so i can say nope empty.
days when i am in the office i look at the soda machine then move the dollar to my stash and drink water , I know but sacrifices must be made if you want gun money when working on a tight budget
yes the wife knows i do this