We have had a lot of inquiries from contractors regarding cost of ownership, cost benefit analysis and how to sell premium LED lamps to their clients. In response to your inquiries, we have prepared a Total Cost of Ownership comparison sheet. The sheet highlights the initial and operating cost differences between LED and halogen lamps, as well as information about how to price retrofit projects and new LED system installs. You can log in and download the sheet right here: https://store.illumicaregroup.com/myaccount.asp Once you are logged in, you can access the sheet by selecting Downloads from the main menu. P.S. Because the TCO sheet contains sensitive project pricing information, we felt it would serve contractors better to remove the PDF document from the public forum and offer access to it through a secure area of our website.