Whats the cheapest character, which levels faster then most. and do you have a build?

I started out with a Barbarian. I put all my points into strength and I bought the cheapest/most effective items that I needed at the time. He's a pretty good character to start off with that's cheap and can level easily but requires grinding, check out this guide : http://forums.d2jsp.org/index.php?showtopic=18377324&f=272