Playing "Devil's advocate" for a bit, that gun might not sell at £4990 for maybe 6 months. Eventually it might go for £4700 after a haggle, or maybe £4200 in the trade if it won't sell in his shop. In the 6 months it's been sitting on a rack, costing money in rent, rates, heating, lighting etc. it's been slowly costing the dealer money. If he had kept his £4000 that he gave you invested he might have made more than he will eventually get from selling your gun. He is trying to run a business, make a profit and keep his staff employed too and that's not cheap.
Of course we all know gun dealers are money grabbing b******ds, runniing round in their brand new Range Rovers, rubbing our noses in it all the time!! :sarcastic:
But if it was that easy, we would all be doing it? :biggrin: There's only ever going to be one winner and that's not the likes of us.
Smile at the thought that you have enjoyed this gun for 4 months (that is a bit short I must admit) and had some good times with it. :biggrin: