I bought 3 bags of Starbucks coffee at Costco when they had $5 coupon. But I don't turn around and sell them at regular price.
Yesterday at the gun show (where that picture was taken), I bought tickets for my friend who drives, using my coupons for both.
But he went to ticket booth while I was talking to the NRA guys, now I have an extra ticket in my hand, instead of going to the ticket booth for a questionable refund, I asked a woman walking from parking lot to the ticket booth, offered her my extra ticket at after coupon price. And told her I'll go in the gate with her, give me money after she gets in.
She hand me the money without a second thought. And thank me for the discount price. Everyone's happy, except the gun show made $1 less. LOL