I know there is quite a few BMW fans on here. How much is an E30 BMW 316 automatic worth?

I've been offered one which is White and looks in pretty good condition rust wise. It's done 170k miles I think and is on an H reg. It has small problems like one front light is cracked.

Any suggestions what I should pay? As there are no E30 316's, let alone an automatic one on Ebay to give me an idea, so I'm kinda stuck.

Thanks for any help