I received an email from the Appshopper website this morning at 09:30am local U.K. time that an app I was interested in buying (Jump Desktop) had dropped in price. I went to purchase it this evening when I got home from work at 8:13pm and it had already gone back up in price. What’s up with that? What time zone does the App Store work on when a price drop and increase can happen in less then 24 hours? I would have thought price changes occur at midnight.