Mary noticed that the one-time service sold well, but the rolling monthly contract did not sell as well as expected. She also noticed that they had a much higher than expected number of commissions for referrals from gardeners. And with summer nearing they wanted to consider adding or modifying seasonal services. Mary, Amanda, and Ed had to consider the costs and potential benefits of adding, modifying, dropping, and repricing services. To do this, they went back to their initial business models and fed them with real historical rather than projected data