RE:RE:RE:From planet Microcap Most recent projects, the payback period are about 2 to 2.5 years. This is no brainer for the customer. After that the maintenance cost is 1% of the project if I hear it right. This is good money but quite low. I would prefer 2-5%. However, we have to understand that there are many competitors out there which have very deep pocket, for example Johnson and Johnson. Bill has to be conservative.