What's it worth? Audi A6 blown head gasket... in NY

[Rainmaker8]

1998 model year but if you know Audi that's the last year of the C4 platform that was carried over for wagons only, so the car is closer to 1997 or earlier. Was running great, has about 125,000 miles, clean inside and out. It was our daily driver until the engine had problem. It's a beautiful luxury car but before I open it up I want to offer it for sale ... Description of car: V6 engine 2.8L single-overhead cam 12-valve, AWD All-Wheel Drive, Automatic transmission, power everything, sunroof works, heated seats, Dark blue body, light tan interior, Recent work: New timing belt and serpentine accessory belt service at 124k (just a few months ago!), including new idler & tensioner rollers, New water pump and thermostat, had all new G12 pink coolant New temperature sensor New oil change and filter with full synthetic Pentosin 5w-40, New wiper blades, New exhaust flange bolts & springs joining cat pipe to rear, New rear brakes both sides left and right, totally new calipers with hydraulic slave cylinders, brake pads still good, New parking brake cables, New transmission filter kit (parts only, not yet installed) included. Wheels stock 15" Audi OEM with decent tires. Problem with engine has water in the oil pan, which means it probably blew a head gasket. Fortunately the car knew it had a problem and shut itself down. It still turns over and cranks but has not run until we diagnose further. The oil cooler (mounted on oil filter) still holds water and does not leak... so rules that out. Coolant reservoir will not stay full, drains down slowly but there are no visible leaks outside. Only after draining the oil was missing fluid found in the pan. Before the car shut off the temperature was fine, no warning light, and oil temp was fine too. If it were warmer weather the problem may have been detected sooner but fortunately the car did not overheat. This could be a quick fix with a routine head gasket change for a skilled mechanic with a garage. Even as-is the car has value for all the good parts. Feel free to contact with any questions if you might be interested in buying it as a whole project? Email is best (click link on my user name) or call 6464848058 & leave a message. Any suggestions for an asking price would be appreciated.