I am researching on road alignment optimization. The research goal is to find least cost road alignment between two given points, considering highway codes. One of the major costs which needs to be considered, is right-of-way cost. To present the methodology in a case study, i need actual land value data or estimated land value or average land value for different land categories. Data for Florida have higher priority than anywhere else for me, since i have other needed data for my research for Florida. Any recommendation or introducing nongeospatial data could be helpful too.