If you pre-order it now, it is $59.99, it is doubtful that it will raise in price, however I would advice you to pre-order asap in case your area runs out and you are left looking for one.
700,000 $
Yes, Diablo is in Diablo 3.
133,000 - 146,000 pounds.
diablo 1 is about 100mb diablo about 800mb and diablo 2 expansion another about 800mb
No, it is not pay to play. The only cost is the one-time price to buy the game.
No. There are Diablo 3 teaser videos on the Blizzard website.
Mephisto is mentioned, but does not appear 'in person' during Diablo 3.
Diablo 3 is out now, it was released on the 15th of May 2012.
No, there is no pirate class in Diablo 3. If you mean to pirate the game, you cannot do that either.
It costs $9.99 from the Diablo 3 official website. I bet you can find it even cheaper from other places as it's pretty old now.
It's been over 13 years since Diablo 2 was a true Hype, so this would give you a perfect reason not to worry if Diablo 3 would be your 1st Diablo game experience.
The requirements can be found at the official Diablo III website.