I saw a 40 boxer shaman massacring a city solo on World of Warcraft the other night, and it got me thinking, since I am bored with the game, maybe I'll try this out and see how it is... I want to "test" this out before spending a fortune on it. I plan on making some WoW trial accounts (Which are free obviously), With my main WoW account being the lead for group invite purposes to try this out with. I only have one computer at the moment, so I would be limited with 2-3 characters.

My question is this, is the basic software for single computer multiboxing (Multiplexer?) free? Is so then would that be enough to test this out before spending a bunch of money on the real deal?