If you had a coupon and forgot to use it until after you paid would you let it go? I just left target and I bought a jacket for my dad it cost $50 on sale but I had a 30% savings coupon. I mentioned to the cashier that I had it but only after I had swiped my card and she just said "oh well next time" so i went to the customer services and had them apply it to my purchase. they were happy to do it but one o fthe customers kinda rolled her eyes at me. Is that excessive of me?

During my wedding planning I bought something from Michaels and I forgot to use my 50% coupon til I got home, I took it back the next day and they applied the coupon to it!! Maybe I am just extreme couponer?