I would say runners might be in this category. I often get emails from Altra, RunningWarehouse and a host of other shoe companies and I will open them up and take a look. I think it was about a month ago that I received an email from RunningWarehouse about some shoes I hadn't thought of at a good deal and I went ahead and bought them even though I didn't need another pair. Another time about 3 months ago Altra sent over a email about a special edition pair which again didn't need already have 5 pairs of shoes but I bought them anyway.
The reason I go through and buy them is because I know I will eventually need another pair and I would much rather buy a pair on sale then need a pair and have to pay more.
The reason I go through and buy them is because I know I will eventually need another pair and I would much rather buy a pair on sale then need a pair and have to pay more.