It depends i've seen a bunch of different prices for dinged and dented frame, even Miclo has been selling a couple for 600-700gbp.
Last year I was asking 500euros with shipping, but it never sold, so I just thought i'd leave it in storage until someone serious really wants it !
I realise I am back in the queue for this, but out of interest for future procurements; how much would a frame and fork go for in this condition?