For comparison...A-ROID (hate that asshat) makes almost what i make in a year...PER AT BAT.but not this year because he only had 181 at bats. But based on his 28mil salary and having an avg of 500 atbats he makes 56k per at bat.
Theres at least a couple of us including myself who have the trd catback. I dont have a supercharger though. No complaints with the exhaust on my '13, good sound.
Your best bet would prob be to use your scratch as a down payment on a new one. Then just keep it for a while. Thats what im gonna do(i got my '13 DC in april). Theyre pretty much bulletproof if properly maintained.