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I've gotten mine from www.therustymechanic.com (@therustymechanic on Instagram) for around US$700. They make it just the way you want it customized with super high quality material.
I did a ton of research when I purchased mine, the most affordable (around US$700-900) and highest quality is from www.therustymechanic.com (@therustymechanic on instagram). Mine was for my model S, but I've seen their steering wheels for the Model 3s as well, and they're absolutely gorgeous.