Market related: "Market value" reflects what buyers have paid, not what sellers have received. Rarely you will be able to get it in full when selling. Some things have very low chance to be sold despite ostensibly having good markup. Use auction trackers to find out how many offers go without a bid. General: Tell people what they want to hear, and you'll have a lot of "friends" who will lie to you, too. Truth makes you few friends but you can trust them.