I do believe I guessed $13-15K, and given that the Price is Right is the gold standard, I do declare myself the winner. ;-)
Unfortunately, bethridg and 905593 are the losers here. Best of luck with the endeavor. I say cash out and get yourself another RS6. Sell the hulk to someone here who will revive it, maybe someone looking to do a monster build/manual conversion.
That, and no doubt if they were given the green light to fix it it would go up by AT LEAST 10%, probably more like 20%. I'm still amazed what it costs in retail to put these cars back to original.
2001 S4 Avant 6mt: AMD tuned, Stasis Streetsports.
2003 RS6 Sedan 6mt: AMD tuned, 515awhp/635awtq, PSS9's, 4:1 Diff
2006 Carrera S 6mt: EvoMS tuned, Sharkwerkes Exhaust, Numeric shifter, Fuchs Reps