Oliver Reichenstein wrote a fantastic post about how iA came up with and decided on the pricing and features for their Writer app ([my review here](http://brooksreview.net/2011/05/ia-writer/)), this point really stuck out to me:
>Even though iA Writer for iPad is a professional’s tool, it is sold in an amateur environment at amateur prices.
So very true of the iOS App Store. The entire post is worth the read if you wonder why Writer for the Mac is priced the way it is.