I am totally new to Xbox...I don't understand how much things cost. I am interested in Pinball FX2 and it displays that it costs 800 Somethings ? of a symbol after the number 800? It also says no refunds. Is this 800 dollars, or 800 thousand...nothing is clear. is this for all of the tables in the game or just the one? Is this good forever or a week or month of use? I don't find this explained anywhere, where would you look to understand this?