That is discusting, how do these places stay in bussiness, it's not that hard to make an exhaust system, one would assume a professional could do one easy enough.
I bought all the parts needed to make a 3" mandrel bend system and had a mate weld it up for me, 1/2 a day to do the job and fit it, stayed with the factory 2.5" stainless system from just before the rear diff housing to the rear muffler, $380 for the parts, and that included a centre muffler from Vortex in SA
The dearest part was the stainless steel flex joint at $60 (apart from the centre muffler of coarse, $261 on special)
EDIT; that should be $480 not $380