CoL adjustments have always seemed like a bit of a foreign idea to me, as someone who has been a freelancer for 20 years (WfH for 15). I'm not sure I would be able to sell my customers on the idea that I should get paid more because I live in X county. (Since my value proposition would be the same, assuming the customer wasn't in/near X.) On the other hand, if I lived in an area with a weaker tech scene, maybe my ability to negotiate would be weakened if they knew I didn't have a wealth of local options to fall back on?