Decision comes as the online retailer tightens parental controls.
Last week, Amazon introduced in-app purchasing to its Appstore for Android platform to offer developers better monetisation for their creations, although there was a $20 maximum charge enforced to ensure fair play.
Now, Amazon has told developers that they're able to charge above that limit, as the firm has enhanced its parental controls.
In an email seen by TechCrunch, it said: "With our parental controls functionality now updated, in-app items over $20 may now be submitted via the developer portal."
It will be a welcome relief for developers that count in-app payments as their bread and butter. App analytics from Flurry show that payments over $20 account for the majority of revs on top iOS and Android games.
The issue of parental controls is a hot one right now, with a legal case pending against Apple over 'bait apps'.