Playing the market is a handy little supplement. At 15 pages, it's a breeze to read. The text is well written and easy to understand.
At first, the mechanic to determine availability and price of items seems very simple and not very special. But once it begins to get into determining the scarcity of an item, that's when it really shines! The system for Modern/Future is understandably more complex, but it also determines how much time will be needed to obtain an item.
I downloaded both PDF versions that were available and was pleased to see that one is formatted to read on a computer screen and the other is formatted for printing. That's a very nice plus.
This is well worth the price and is a wonderful supplement for those gamers who want to add in a little more uncertainty to the in-game shopping experience!
[5 of 5 Stars!]