I believe what he's trying to say is, "What if JaGex gradually increases the drop rates of things like whips, barrows, and dragon items, depending on how long they have been out, in order to drive down prices?" If that is what you're trying to say, that's preposterous. Like JaGex cares what the prices of in-game items are. There's only one 'price' they care about, and that's the $5 a month for membership.