Jason those prices will only work on postage stamp lawns and is basically a stop charge plus a little application work. Try selling that to a 10 K lawn and you'll quickly find yourself overpriced in the market place.
If you notice, printers often charge a high rate for 250 pieces and then the cost per piece drops as you order many more of them. The reason being, once its all set up on the press it dont cost much to keep cranking them out.
Best of luck