I've noticed on the Grand Exchange of Runescape that the santa hat items fluctuates in it's price, whereas the disk of returning is more stable. I'm thinking of selling my santa hat and buying a disk of returning because I'm afraid that if I keep my santa hat, the price of it will go down. However, the price of the disk of returning always goes up no matter what, since it's discontinued. So I'm asking all you experts out there: should I sell my santa hat and invest in a disk of returning, should I wait a little bit longer, or should I not sell my santa hat at all?