Pawnbroker, you are exactly right in the profit is all in the buy, not the sale. Too few understand that and can not make money in a down economy. Worse is when you refuse to admit that your mistakes and hang on to a gun, house or car for too long.
Gunbroker is flooded with guns that are listed for years on end with almost no chance of ever selling because the seller refuses to accept fact that his price is not the market price. If you want to or need to sell a gun then you have to see the market for what it is and price your wares according to real current market conditions not those that existed two years ago or those which might exist two years from now.
Just look for house sales and you see exactly what I mean. The only houses here that are selling are those priced at today's depressed prices not those of the peak two years ago. To me Gunbroker is like a real estate listing of a house at 2008 prices and keeping it listed forever hoping that some one will pay their inflated prices. Just not going to happen.