In a move that's likely to grab the attention of more than a few Android developers, Amazon has announced that its arbitrary $20 limit for in-app purchases via the Appstore is no more. The company announced this change in an email to developers, which follows a tweak to the Appstore's parental controls. In-app purchasing is rather new territory for the Amazon crew, which first unveiled the necessary APIs just last week. There's no word on what new monetary
