Parkers & Glass's guide have always been b*llocks when it comes to Audi's. If they hold their value, then surely this should be reflected in their estimates.
There's loads on Autotrader for that sort of money, no S3's though.
1998 AUDI A3 1.8T Sport, 1998,
S reg. stunning silver, 41,000 miles, fsh, bodykit, 17 Porsche alloys, pas, black leather heated seats, rear headrests, 6 disk Bose stereo, computer, e/sunroof, windows and mirrors, climate control, foglights, total closure alarm, excellent condition. £10,650 . (07711) 235400.
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1999 AUDI A3 1.8T SPORT
one owner,38000 miles, laser red, f.a.s.h, climate control, on board trip computer, electric windows, central locking, alarm. carefully used by me from new. 38000 miles. £9500
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2000 W Reg Audi A3 1.8T Sport
Satin Black, 45,000 miles , 3 Doors. One Owner. Full Service History. Climate Control. Electric Windows and Mirrors. Central Locking. Power Steering. Anti-Lock Brakes. Stereo. Alloys. £12,295.
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2000 W Reg Audi A3 1.8T Sport
Black, 42,000 miles , 3 Doors. One Owner. Full Audi Service History. Air Conditioning. Electric Windows and Mirrors. Central Locking. Power Steering. Anti-Lock Brakes. Stereo/CD. Alloys. £12,495.