Coraggio

Interesting marketing concept I thought of. Probably not new.

Say a shopkeeper wishes for a certain group of products to be sold (e.g. coke cans, bananas and toilet paper. A potent mix).
He/she sets up an attractive offer - a free gift for every X dollars spent on goods. No more, no less.
To get you buying those products, he/she does this: altering all prices of goods sold in the store such that no (or very few) combinations of things purchased total up in cost to exactly X.
So that, in order to get that free gift, the only thing you can do to do so is to buy that combination of goods that he/she wants you to buy.

And these are the assumptions/conditions:
-The gift must be desirable to some extent (no tissue paper, thanks).
-The combination of goods in question must be obvious to the consumers. i.e. it must not be difficult to see that they add up perfectly to make X.
+The shop may have few other goods in the shop, to facilitate this.
+The shop may present the prices of the predetermined goods very prominently.
+The shop may be small in size.


-Zan