From your description, at 90% condition, with all the features of a choice upland gun, you should expect to pay at the top of the range for this type of gun. You will look at a lot of dogs to find another in 90% condition, if you are comfortable with that description.
I will refrain on pricing because our prices are generally lower than US prices. The range quoted does not seem like scary numbers to me if this is the gun that feels right.
Remember also, that this is a gun that you can handle and examine, not an elusive, possible gun out on the Internet.
I will say that I have more regrets about really nice guns that I didn't buy, than any that I paid right up to top market price.