While in the end it sounds like a lot of money, in the end it is fine as long as it's disposable income. I feel like something becomes an obsession when it starts to negatively affect your life. If you have all the money you need for living expenses and other important life things and then have some left over, your free to do with it as you please. For time it's easy to add it all up and feel like it could have been used for something different. The way you feel about this depends entirely on you and if you feel you got a satisfactory amount enjoyment from the game. The only thing to keep in mind is that at the end of the day video games for most people are a hobby only to be used in spare time and shouldn't take priority over more important matters.