I saw this when I was browsing Amazon. I personally don't play this game but I reckon this is a decent price. A quick search with camelcamelcamel confirmed this is the lowest price ever.
Being the standard retail box version means you get the pretty box, manual,dvd etc. along with the most important CD-KEY.
The game itself only cost US$27.99. Pity Amazon has to charge hefty US$15.98 to ship it to AU. Considering Amazon only charged me $6.41 to ship my 2TB WD portable hard drive and $30 to ship the Dyson 44, it's a little bit expensive. I tried to add some other stuff I wanted to buy and glad to see the total shipping fee was reasonable. So if you want to combine other things, it's definitely a deal.
Pity it was a crap game…