Ebay, amazon, or Lego if it is still available.
If you are lucky, some stores will still have them, but unfortunately, Lego Mars Mission has been discontinued. You could buy the sets on Ebay or Amazon.
yes
you buy it at a Lego shop
eBay, Amazon or the Lego website are the best places to buy Lego train sets.
The Lego company has stopped making Lego batman but you can still buy them at amazon. As of 2012, Lego also started a DC Superheroes and Super-villains theme. The link can be found below. You'll find some Batman sets ;)
simple, buy a Lego Ninjago set when he was still evil of go to a minifig store
yes it is in eb games very fun
No, you can only buy 'Catwoman' on the game.
Buy it!!
At any Lego Store
You buy them