Especially when I'm buying vacant land out-of-state, my first line of business is to understand the topography of the property. There are many, many places around the world that have very unpredictable elevations, cliffs, mountains, valleys, ravines and more. In many cases, the topography of the land can have a huge impact on the build-ability of a property. For the same reasons you can't build a house on 90-degree cliff, you should be doing some preliminary research to find out where your property is located, and what the lay of the land is.
Your buyer profile can depend on what type of property you are selling, whether the land has been developed already, its location and market conditions, among other criteria. Is your likely buyer an individual looking for a lot for a new home? Or is your buyer going to be a builder or developer looking for land for their next project? Or is your buyer some combination of those, or someone different altogether? There may be different buyers for finished lots, rural acreage or a parcel of suburban land in a thriving new home market.