Whether you’re a child telling a parent you didn’t eat the bag of candy or a parent telling a child the bag of candy must have accidentally been thrown away, getting caught telling a lie is uncomfortable. In a business situation, such as a negotiation, being caught in a lie can create distrust and kill a deal.
While some people may feel like stretching the truth or outright lying during a domain name sales negotiation is acceptable, I always assume the counter party has more information than they may have. To me, this means I assume they know prior sale prices, listing prices, and other pertinent information about the domain name. Even though it’s not possible, I also assume the counter party knows about previous offers I received. With that in mind, I won’t say something the counter party knows to be untrue.