You have to be careful with emporium, you can get a peach of a bargain but just as easily get an absolute nightmare.
I think he buys in bulk and doesn't really check what he sells. I got an LS100 off him for a good price but all the valves were completely shot and sounded bloody awful until they were replaced, even with the cost of the new valves it was a good deal.
If you speak to him don't try and haggle or tell him how much you think it is worth, just offer him a price and tell him to take it or leave it, it's just the way he is.