CVS (backdated)

I paid 2.43 for everything, and then realized I'd been rung up for two of the Thermacare, I ran back in and they did a "return" and gave me back $2.50 (well, I gave them a penny since the Thermacare was $2.49)!  So it was entirely free, you can see what coupons I used on my receipt, and I got back several ECBs ($17.98 total) and I even made ECBs due to the mix up with them ringing up two of the same item, it generated ECBs and they let me keep them :o)