I am not sure that even if you sew it your self, scratch build the bucket, knees, armor... and jet pack that it will come in for that amount. I have about $3000 invested in mine and I am still makeing tweeks.
But like Ronin said, if your not going for super pimped out fett then you can do if for at least a few hundred. But you will have to sew a suit or mod a jumpsuit your self, scrach build everything. But it can be done. 