Scott Adams (Dilbert creator) probably isn’t the world’s best illustrator, and he certainly isn’t the best comic. But combining or “stacking” these two skills gave him a unique mix of attributes.
The moment someone can ask “what’s the going rate for…?” you find yourself engaged in a race to the bottom (the kind of race you don’t want to win). As an employee, consultant, business owner, or product maker, you can escape the lowest-price-wins race, and ship the best version of your product (or yourself) if you forget about being the best, and focus on being the only.
There’s no one on earth like you.