title: iOS - In App Purchase items w/ metadata
body: <p>Is it possible to store metadata w/ an IAP item(s)?</p>
  
  <p>Example:</p>
  
  <p>Let's say I have various cars available as IAP items.
  Each IAP item has an image and a name. Can there be an arbitrary amount of metadata per item, such as: MPG, Color, Mileage, Number of Accidents,....etc?</p>