Why are there people on eBay buying formula coupons at almost face value. What is the purpose?

people are starting to buy everything on ebay on at face value these days theres just so much traffic people are getting cockey with there bids and over bidding and people are treating it like a regular store (and you have to remember there is a large amount of stupid people in the world these days). its hard to find a good deal on ebay these days