Hi Andy, welcome to ASN. Try posting over in the A3 section, there will be someone on there to help you out. Enjoy the forum.
Try and keep it in the family if you can, a decent low mileage Audi even if quite old will outlast most 2 grand motors I would say. If you must sell it you may as well ask for more unless it needs money spending on it, even though more normal mileage a3's of that age change hands for less.
Hi mate sounds reasonable, welcome to the forum