Opinion on my Audi RS6

[formula1man]

I welcome opinions on this. I am looking at seriously selling my RS6. I really do not drive it, like ever. Just enough to maintain it, keep the battery, tires, etc happy.
It has a long list of upgrades I will list all I can recall:
KWV3 suspension
Forgestar wheels in titanium to match the Avis Silver paint
Alpine upgraded stereo system with no issues
Intake system upgrades with stainless/KW cone filters
ECU and TCU upgrades from MTM
Carbon fiber interior pieces
54k miles
APR Dv's
Milltek Exhaust system
Downpipes are from So Ca Co. as the torque curve is much better than Milltek
Only serviced with correct 505.01 oil
Wagner intercoolers
Est 580HP and 600 Tq
Any questions please ask. Any thoughts please let me know. I really should ask what price I should look at.
Car runs extremely well, it just seems dopey to have a under 4 sec 0-60 in my small area.
Thanks in advance,
Aaron