I think opinions will vary a lot, but I think you could buy that gun on GunBroker for 600-800 most any time, and some times for a lot less, I have seen a similar gun go for 500.
I am sure a store is going to ask 800+, and it may be worth it to you, but I would not pay that much. It looks like a good shooter, but does not have any real collector value.
That's my .02 worth, I track GB 03 sales closley, and have for several years, and I stayed in a Holiday Inn yesterday
Tom
PS Welcome to the forum, nice people here, when you make a mistake, they are kind!