For example , a bakery which offers raspberry muffins and then adds blackberry muffins will likely see a decline in sales of the original product .
The total sales of both products will likely be higher than the original single product .
For example , a bakery which offers raspberry muffins and then adds blackberry muffins will likely see a decline in sales of the original product , although the total sales of both products will likely be higher than the original single product .