Run a blog on scientifically-informed worldbuilding, but this is mostly a portfolio for commission work. My work is mostly in geologically informed mapping, including tectonic histories using gplates, detailed terrain using gospl and wilbur, climate simulations using ExoPlaSim, or simpler mapping by hand for smaller projects. Price is generally in the range of $100-800 USD depending on the job, use message or email worldbuildingpasta@gmail.com to inquire. Also check out the Worldbuilding Pasta blog for more info on the process and general worldbuilding info: https://worldbuildingpasta.blogspot.com/