Demigod, is that fun as a single player? I know it had multiplayer issues and all. It can be played one player, right? I could probably go look that up, but you know...lazy...
I don't think you shoud buy A copy; I think you should buy 2 and get a friend to play as well. The connectivity issues aren't bad enough to ruin the game IMHO.... many of the problems are usually because 1 or 2 players have a crappy net provider.
I play games up to 3v3 with pings up to 450. NO PROBLEMS unless there is a player who joins that has slow upload speed or their CPU or graphics card struggle and slows their REFRESH RATE. If one player is lagging due to these issues, then they lag all players in a peer2peer connection Demigod uses.