I saw something about sneaker resellers once where they looked at all the different logistics of reselling a sneaker. They highlighted the process starting at buying the product, shipping it to your house, setting up an ebay auction, waiting 7 days, sending it, then receiving the money. They ended up making lower than minimum wage.
More than likely if you do this, you will waste time, lose money, and not allow the people who want to keep and use a product for their personal use to do so.