Does it definately have a broken LCD, as stated by the seller? Think it's one of the old dynamic scattering models (there's a pic of an identical GF version in the Doensen book)? As it's NOS, what's the chance it just need's contacts cleaning, and new batteries? I think it cold be worth a punt, if the price doesn't go up too much!
As I didn't have anything like this, I have just bought the GF version the seller was auctioning, as a speculative buy. Would also have bid on this, but I don't want to be greedy, and I don't plan to do too much speculative buying. Also, as NEPRO's seem to be very rare on ebay, I think getting a repalcement module would be a hell of a job! Good luck to anyone who bids :)