I still have no idea what the thread topic is. Very confusing Mitch.
If I were this confused with a seller's approach, I simply would choose not to do business. The FFL dealer who has a store has to come out ahead of the game in a trade or paying cash for a sellers gun/trade. Otherwise he won't remain in business long unless it is for something special that the dealer really wants (usually for himself).
Highest prices paid for guns? Highest trade values in exchange for guns in stock? Sounds like a gold buyer. Market +10%... (Define market price) Gimicks.