Investments: if you had invested $10 in Mets Money in 2008 you could now have….

Saw this going for $19.50 on eBay.   If the seller bought this for $10 and gets $19.50 that’s nearly double his or her money in ten years.  I am not good at investing, that’s good right?  Maybe Jeff has a stash of Mets Money in the back he can spend on players.