Typical conversation stopper. There's several ways of getting around this; but you have to be talking to the decision maker. One trick (after you introduce yourself, but before they have a chance to comment) "You may already have a window cleaner, but I feel that my services would benefit you because ........................." Another way to get around this is, if the windows are dirty, and they say they already have a window cleaner, ask when the last time their cleaner came by. That opens the door for you to talk about how you are prompt, which could lead to a sale. My best approach to this "i already have a window cleaner" tactic is once they tell you they have a cleaner, ask them if they're completly satisfied with the level of service they're receiving. They'll more then likely pause, which will give you the chance to ask them if they wipe up the water, do they clean all the windows, do they come on time, etc. Chances are if you can get the decision maker to talk, you can get a sale. I always sell myself on quality, not on the price. Try to make the price the last thing you talk about. If the ask you point blank, explain the price, then follow at how you arrived at that price, and the value of it. Start selling now and do not slow down tell you've got enough work.