I think that it can be seen very often that someone buys a product that seems attracting to him and after some time he realizes that he or she doesn"t really need it. In this situation, he or she wants to sell it as fast as possible. Obviously you wouldn"t be able to sell it for the price that would let you benefit from it, still you would have the opportunity to get back at least part of the money you have spent. In case of clothes people very often decide to go to second hand shop and get rid of their clothes there. Sometimes they are able to get good price for such clothes. But what about other products? After all there is a possibility that someone would like to sell something different than clothes. I guess that was the idea behind the online service I have seen recently. It allows people who workout to sell their nutrients and supplements such as whey protein. Let us imagine a situation that you have bought such product and you are not satisfied with the effects or you have allergy caused by it. Then you are willing to sell it sometimes even after a day of using it. That means that this whey protein is still good and someone would be able to buy it a lot cheaper than if he or she decided to buy a new one. What is your opinion about such service?