i also had my order canceled by onsale. i just finished chatting with a rep at amazon. they said you cannot leave feedback on canceled orders. but they suggested that i report the seller for canceling the order:
Daniel B.:The authorization should be removed within the next couple business...
im definitely gonna check this out. i'll be looking for:
saints row 2
gta iv
nba 2k9
socom
mass effect
other than those, i'll see if something else catches my eye...