It is feasible that the rares market is in a huge bubble. In terms of investment, the only reason why the price is rising is because other people are thinking that it is a great investment as well. As you can see, this is a cyclic argument, but it works in the marketplace, as long as there is enough consumer sentiment to drive it. Eventually, there won't be that many people who can afford the phats, and thus the market begins to lose the masses of consumer sentiment that usually drives bubbles up -- then eventually: burst. There will always be the players who want the phats because it's cool and rare, but if the market is reliant on the belief it's an investment, these bubbles can burst.