Apple Sliced is a site that keeps watch on App Store prices, and they've just released a year-end report on how much app prices fluctuated over the whole of 2012. Overall, says Apple Sliced, 35% of paid apps on the store ended up dropping their prices at some point last year, which is a sizable number for sure. A slightly smaller percentage of apps (around 32%) were cheaper at some point in 2012 than they are now, which means they dropped and then raised them. While these numbers represent a large proportion of apps on the store, they also aren't that surprising -- plenty of paid app developers do price tweaking and put on sales from time to time, usually just to raise interest (and thus downloads) in their apps.
Apple Sliced