"In the end, it all comes down to the theory of value". David Ruccio.
The late Prof. Frederic (Fred) S. Lee, it seems, did not mince words. That's an admirable quality, particularly when the targets of one's words are our colleagues.
His 1998 book "Post Keynesian Price Theory" (Cambridge University Press) opens with a highly critical review of what passes for a post Keynesian price theory (this post's title borrows from a subtitle in that book's Introduction).
Lee closes the first section of the Introduction with these electrifying words:
"Post Keynesian price theory has no real existence beyond the idiosyncratic writings of various Post Keynesian economists, its various renditions are theoretically incompatible to a lesser or greater degree, and it has not been entirely freed from neoclassical concepts and terminology. My objective in this book is to move Post Keynesian analysis forward towards a more comprehensive, coherent, realistic - and, indeed, believable - non-neoclassical theory of prices by setting out its non neoclassical pricing foundation by developing an empirically grounded pricing model". (p. 3)