Affordable Landscapes: An Unlimited Solution to All Your Terrain Needs

I’m quite sure you drag and drop the height map from a third party software into the engine and you are done. And those who make all the maps for every video game out there such as Battlefield 3, 4 etc. Are making them with a few mouse clicks and for that they are working for free because a map they make isn’t even worth $10.
OP is nothing less than modeling, texturing, making shaders, setting up lighting etc. Isn’t that what industry is about? you are simply saying charging money for these is fraud. You can’t walk in someones thread and say you can’t sell your weapon because you have used already existing tools to make it.