For anyone ordered but still don't have install their copy of "motion" to computer, it's still have chance to refund it. please check the following detail ...
... You may return software after rejecting the licensing terms, provided the software is not installed on a computer. However, software that contains a printed software license may not be returned if the seal or sticker on the software media packaging is broken ....
original from apple web stile.
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store.apple.com]
Antonio Hui