RE: good upland gun???
Idaho - The 12-bore SxS gamegun has been the ultimate form of upland gun since the British perfected it around the turn of the 20th century. There is no finer tool for what we upland bird hunters do.
All that being said, you aren't going to find many British gameguns in your price range...however, you may find some very nice used Spanish boxlocks that you would be very proud to own and shoot. Watch the online auctions and visit pawnshops and the like. You just may stumble on to a great deal.