Stacking Coupons. It's Very Confusing!
There is very little about stacking in the duo-tang you received in class because I didn't want people to get confused with it, it's not simple... as you can tell.
From Manitoba to B.C. there is a store called London Drugs (we can only hope that one will come to Ontario!)... at LD you can use multiple coupons for the same item!
There are specifications for this like: the UPC/code has to be different and there can't be restrictive wording (specifying no stacking, etc).
In Ontario we are limited to very little stacking, if at all. The wording on the coupons is generally not permissible of this practice. However, the rare circumstance has happened that it does get through the checkout.
Here's how that works:
I have a coupon for a buy three products and get one free (B3GO)... I also have a coupon for each of the three items to make them even a better price. I use the 4 coupons to purchase the 4 items (one being free anyhow).
I have a coupon for: Buy 3 Lipton soup products get 1 freeLipton Soup is on sale for $1.00 a package.
I pick up 4 packages (as specified on the coupon (need to purchase 3 to get one 1 free)
For each Lipton soup, I have a 50 cent coupon... =$1.50 in coupons (3 coupons)
I am buying 3 (with coupons!) and one is free = 4 products
Total for all 4 items together should be: $1.50!
However:
Some cashiers may not accept the 50 cent coupons WITH the B3G1 coupon.
So, you would be paying for 3 products (in the example you'd pay $3.00) and get one free.
The total would be $3.00 for 4 items.