customer: hi i’d like to buy this thing for 20$ and i have this 10$ off 20$ coupon :)
me: ok :) your total is 10$
customer: i also have this coupon for 5$ off of 15$
me: sorry but your total is 10$ and this second coupon says off of 15$ so I can’t apply it to this transaction
customer: my original purchase was 20$
me: …..yes……., but the first coupon brings your total down to 10$ so I can’t use an ‘off 15$’ coupon when you’re only spending 10$. Did you want to get something else for 5$?
customer: *gestures to the items* m y t o t a l i s 2 0 d o l l a r s :)))))))))))
me: yes… before the first coupon. when i apply a coupon your total goes down. you’re only paying 10$.
customer: wow what a rip off!! this is absurd!!!!
me: …….. :,)
yooooooo even if you reversed that and did 5 off of 20$ = 15$ total and you’d be left with a 10$ off of 20$ that ya can’t apply!! dumb bitch