If there's money to be made by doing something, regardless of what it is, some one will be there to do it. You can call it speculating, or you can just say it's providing a service. If I want Kit X, and you had the foresight, capital and space to buy and store the kit for however many years, then I will gladly pay you for your time and effort for the chance to own something I really want. If your price is unfair, then I will sit patiently until another comes up for sale, or an alternative is produced.