I saw this on the Daily Telegraph (Sydney) this morning, Bing Lee is advertising Microsoft Office 2007 Home and Student edition for $114 after $25 cash back.
I believe this is for 3 licences which means you can install it onto 3 PCs.
If you have kids, you can also claim the 50% education tax rebate as well.
Please note that the June cataloge has this at $149 so double check with your local Bing Lee first.
$25 Cash Back from who?
I think that is misleading customer.
https://www.microsoft.com.au/electricity/default.aspx