I'm not sure if this is a deal as I have no idea if this is across stores or already posted but I just saw an amazing deal at Adelaide City Myer store.
5K 27" iMac marked as original price $3199 down to $2399. It was new unopened and sitting on two 21" iMacs with similar discounts. I'm posting from mobile but I'll upload the pics and link shortly.
http://tinypic.com/r/okzhxz/9
http://tinypic.com/r/24zhweu/9
http://tinypic.com/r/103tl5c/9
seems a bargain to me.
If thats what you are into.