Most important I find, is the timeline:
Made my order on Monday.
Shipped on Tuesday.
Recieved next Monday.
Very happy to get it so fast. (I had read horror stories about waiting 21 days and filing a lost in post complaint)
Play.com was the cheapest (then 12,5EUR) that I could find. AWESOME price!
It was easy to upgrade my Greek Civ.
The hotkey card could be usefull..
The poster... well... I didn't buy this game for the poster which is kinda tiny to be called a poster :-)
Very happy with the price and delivery from play.com