If you purchase an app for your iPhone/iPad/iPod Touch in Taiwan you have 7 days to request a refund.  This is a feature that’s sorely needed stateside to deal with the hundreds of similar apps that many provide less than ideal functionality, and which sometimes have gamed ratings.  For some people a dollar can still be a lot of money and for them it’s more punishment than anything.  Hopefully Apple brings this policy stateside so if you try an app which does not have a free version you’re not out your money anymore.  Still, if we were able to get our money back, I would want to still be able to rate that app as I see fit.