Depending on what you want, you could build one. I know Berrien Buggy has a knockdown 2 seater kit for $399.99 and another company up in Kentucky has a similar one called the packrat for about the same. You'd need a rear torsion and a front beam, not to mention all the running gear, steering, etc... But its a cheap initial price!
For all the other stuff, I'd shop around. I got a rear torsion housing for free a while back just cause someone wanted it gone. I know spook had a whole Gaia cut up in his dumpster yesterday with the torsion, trailing arms and front disc beam. Something like that would be ideal if you were building one!
