The android market also auto-cancels your purchase if you are unable to download the app after a set period of time. I found this out when I bricked my kindle

The android market also auto-cancels your purchase if you are unable to download the app after a set period of time. I found this out when I bricked my kindle fire after trying to get the marketplace to work(it would allow the purchase, but couldn't download the new app). This change would probably help fix issues where the user can't download the content, but could download the app through the market.