After putting the coords and areas into the dbs yesterday, I reworked the XSLT that generates the title-based and lot-based XML views of the data so that they include price-per-square-metre for titles and lots, and also a version of it normalized to 2016 values. There are still lots of unknowns about how we handle this data, especially the edge cases (missing lot info, extinguished lots, etc.), but I'm working this stuff out now with JSR.