15$ or 20$ dont know really but it worths.
If you mean Warhammer 40,000 and Warhammer Fantasy Battle witch Warhammer online is based there was in earlier versions of the games, But much of i has been changed in the current incarnation.
About 2.50 to 3.75
If you mean the MMORPG "Warhammer Online", the answer is yes.
You can play online with other people with "warhammer"
It was given 93% so pretty much yeah
Buy Warhammer Online: Age of Reckoning and it works on Mac or PC.
Yes
It costs about $43.00 (AU) for the normal price at Games Workshop.
no warhammer 40k is much bigger
No.
amazon.com
Yes it is.