Caution: Stay away from making your Android app free for a short time
Just read this over at the Android Developers google forum:
My app had a one-day sale on all platforms and app stores. The price went from 2.99 to free for just today, but now that the sale is over, I need to revert the price back to 2.99. The bad news is, the developer console will not let me change it! I have to pull the app until I can get this resolved.
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