Hit your local Speedway gas station... there are tearpads for 50/2 Hershey candy bars.
then hit Meijers...where Hershey candy bars (near check out lanes) are BUY 2 GET 2 FREE.
62 cents x 2 = 4 candy bars. (62 x 2 = $1.24) minus your coupons doubled = OVERAGE!!
the first 2 coupons double up, so ... (62 x 2 = $1.24) minus your coupons doubled = OVERAGE!!
Yesterday I got 12 candy bars, which means I paid for 6 of them, for a total of $3.72. I used 6 coupons for 50/2 because I DID get 12 candy bars!
the first 2 scanned and doubled, lowering my bill for 12 of them down to $1.72.
the next 2 coupons scanned and did not double, thus lowering my bill down to .72 cents.
the last 2 coupons beeped and the cashier manually entered them, and they doubled too (

)... so in the very end...
12 candy bars cost me
Negative $1.28 off the bottom of my bill.