True to a point. I'm a level 50 miner and a level 37 botanist. Selling raw material that are worth less than 20 gil isn't worth my time. In fact even if it's worth somewhat more than that I have to consider how much time do I want to spend mining for myself, selling raw materials on the market to others, etc. Sometimes if I use the raw materials to synth HQ intermediate materials I can get a much better profit. But I still had to spend the time gathering the materials.

Also for things like goat skins, raptor skins, etc. You have to go out and kill them. That takes time to. Some days it seems like they drop a lot of skins and other times they drop junk like aldgoat chuck. The market for the chuck is so saturated, even for HQ chuck that I just discard it. lol