We'd expect one in excellent condition to be on a dealer's forecourt for about £2500 with a similar car in the classifieds for about £2000. A solid car that needs a bit of TLC is about £1250 while a project can be £500 or less. From your brief description yours sounds like it's around £1500-£1750. Of course, a car is only worth what someone wants to pay for it and while Allegros have seen their popularity grow over the past ten years, they still get a rough ride.