GAME are known for having very limited stock online, so if you are keen, get on it!
"The Game of the Year Edition includes tokens for download of all 4 of the add-on packs so that you can enjoy all of the content from one of the Most Acclaimed Games of 2009 in one sweet package."
Edit: Too early over here in WA to call a local store to check stock, but hopefully this deal might be instore too.
Out of stock online.