I was going to suggest a Taylor GA3-12, I own one. I've always been stunned at how cheap they sell for compared to what you get, but I guess the world has caught up with me and there aren't any out there at the moment. Even so they sell for more than $500.
It would serve him the rest of his life, though.
https://www.guitarcenter.com/Used/Ta...+49466+GCWPDPU