A letter to an agent saying: "As you stated you could get $30,000 for the place you occupy, * * * and if you can, we will sell at that price * * * and allow you 2 1/2 per cent on said price," merely authorized the agent to find a purchaser, but not to sell, and a contract by the agent to sell confers no right on the purchaser. Grant v. Ede, 85 Cal. 418, 24 P. 890; Simmons v. Kramer, 13 S. E. 902, 88 Va. 411; Lawson v. King (Wash. Sup. '09), 104 P. 1118.