Answer:
i currently own the game mass effect.
i think it is a Good investment i mean you don't get loads of guns but the weapons are amazing. the skills you can get are also really good too so i would buy it. to get it cheapest get it off eBay or amazon as game shops are usually more expensive.
but there are some problems.
if you are in a lift one it takes ages to load. and two my game broke in the lift. i had pause it to go away for a bit when i was in the lift and when i came back all i could see was a wall and i had no character.
i hadf to turn off and the auto save hadn't worked.i had to redo hours of game play.
but when it works its good. .