Here is this car's value according to edmunds.com TMV (True Market Value):
 

2003 Audi A4 3.0 quattro 4dr Sedan AWD w/Automatic Trade-In Private Party Dealer Retail National Base Price $7,709 $9,156 $10,492 Optional Equipment $968 $1,133 $1,430 Leather Door Trim $88 $103 $130 Leather Center Console Trim $96 $113 $142 Heated Passenger Seat $33 $39 $49 Driver's Seat Memory $16 $18 $23 Bose Audio $120 $140 $177 Auto-Dim Rear View Mirror $16 $18 $23 Auto-Dim Exterior Mirror(s) $20 $23 $29 17 Inch Alloy Wheels $184 $216 $272 Universal Remote Transmitter $20 $23 $29 Self-Leveling Headlights $32 $38 $48 Xenon High Intensity Discharge Headlights $78 $91 $115 Rear Ski Bag $49 $58 $73 Power Glass Sunroof $103 $121 $153 Heated Driver's Seat $33 $39 $49 Front and Rear Side Airbags $64 $75 $95 Steering Wheel Audio Controls $16 $18 $23 Color Adjustment Black $-48 $-57 $-66 Regional Adjustment for Zip Code 27502 $32 $39 $44 Mileage Adjustment 104,750 miles $-1,056 $-1,056 $-1,056 Condition Adjustment Outstanding $702 $797 $934 Total $8,307 $10,012 $11,778     Certified Used Vehicle N/A Price Another Vehicle

 This is your chance to own a beautiful car that will impress all your friends and neighbors and give you many years of unparalleled satisfaction! This car was about $31,000 new (see below window sticker). Why spend that kind of money on a new one when you can have this for a fraction of the price?!