[stunsworth]

I sold an M3 recently on eBay and it sold for £325. It sounds as if it wasn't in quite as good a condition as the one you have.

If your looking at dealer prices, reduce them by about 20% to get an idea of what you'd get if you sold it privately.

Completed ads on eBay are a good way of finding out what some things' selling for. There'll be some variations, but you'll get an idea of the approximate value.