So on Tuesday I ordered 20 boxes of aspirin since every walmart has been out... Well my order came in today and I went and pick them up.. My cashier was hilarious she was French and after putting through all my aspirin and my advil nighttime the total was 107$ something. Anyway she put in all the coupons and says total is 41.97$. She looked again and goes huh... She noticed it was a negative balance. I was like yep it sure is hehehe. She laughed said sweet and handed me my receipt and my money. Great way to save for my BBQ. Btw this was at northland walmart in Calgary and there was 30 boxes on the shelf also so hurry and go get some :).