I used to be interested in Marxism, but not so much anymore.

However, I'm still interested in theories of value. The labour theory of value is not just a Marxist thing; it was widely accepted in the 19th century, and there are still non-Marxists who use it.

I have a hard time deciding if the debate is anything more than a matter of definition. Perhaps one ought to have multiple theories of value for different purposes?

Anyway, I want to ask if you have any recommendations for reading on this subject.