I paid 350 to get mine completely chopped, new shock mounts, chrome alloy sub frame, sand blasted and powder coated.
you can do most of the work your self though. depends on how far you wanna take it.
my bike was 46 lbs I cut it down to around 25-30 so you can save a bunch of weight.
this is a drag only bike though, I do not dune it other than to get to the drag strip in the dunes.