Ah! came here to post that :p
THIS.... is gonna suck....
good think i'm interested in the game for single player mostly ^^
Jokes on you, you need to be permanently connected to the internet to play. Though I am sure pirates will find a way around that quickly enough.
OT: The items for real money thing is actually player run auction like the WoW auctoin house. You get some items or something and you can sell it on the auction house, which someone pays for with some digital currency. You can then use the currency to get real life cash or use it to get some other things from blizzard, like WoW game time.
The first point of always being online is the first problem I have witht his game.