Is there some sort of third party thing (that's not a smartphone app) that lets me input my current location and tells me how far away I am from a system selling rare commodities? Not any particular named commodity, just any system that sells one, any one. For instance, I'm in Eravate, I want to know what rare commodities there are in a 20ly radius that I can take with me when I head off toward the Pleiades. Or when I'm in the Lave Cluster, I want to know what I can take with me before I head down into the Empire. EDDB.io doesn't quite seem to do that, unless I'm using it wrong.