Welcome to the world of Buyer vs Seller. This is an ages old process, one populated with tradition, innovation, and brown apple sauce. Get over anything personal in transactions. Real buyers are motivated to pay the least possible, just as real sellers are motivated to get the most possible. Money changes hands when the price is agreed to by both.

In the case of guns, the #1 gun buyer's mistake is to rush into a deal based on fear of missing a bargain. It is much more likely that you will make a mistake than that you will miss a real, bonified bargain. If you don't know what something is worth, don't buy it until you are satisfied that you have done due dilligence in confirming what you will pay.

Per offended seller - very old technique to stampede you into a high price. Unless you are planning some long term relationship with seller, his "offended" should be of little concern. How do you know it was "genuinely?" He has no obligation to price at what you consider to be realistic or fair. You have no obligation to buy, even if he offers you a rediculously low price. When the buyer and the seller don't agree, each moves on. Simple as that.

PM me an email address and I'll send you an Excel file on pricing Brit and Continental guns. It won't help with American guns.