Speculation leads to bubbles virtually every time. There is no item that simply goes up, every item has fluctuation (even gold, which actually is intended as a value reserve). Some items when they fluctuate down they go down to zero.

Investing is not an easy thing and as many have said for years you should not treat pins as investments. They are toys and luckily, because of the influx of players the past few years, the toys have retained some value on a secondary market.