This is a difficult car to value. Second generation examples are few and far between now, although there are a couple of third generation examples for sale with dealers at the moment - both in the £3k to £4k bracket. While a standard accord from this era might go for under £500, a 1989 Accord Aerodeck sold at Anglia Car Auctions in 2017 for £4830. To the right buyer, this car is probably worth about £3500. However, just because it's rare doesn't make it desirable. Chances are you'll have a few people offering to take it off your hands for £500 and you'll have to really hold out to get a higher price. Worth dropping by the Honda Accord forum (typeaccord.co.uk/forum/)