Is there a market for the Dennis Had/ Cray Audio Tuned Pipe design Speakers

I don 't mean to be flippant, but my sense is that there is always a market for used audio equipment at the "right" price.  That "right price" may be pennies on a dollar.  Whether you are willing to sell it at that price or not is your decision.  It strikes me that an auction with a very low reserve price will bring to the table any potential buyers and flesh out the market value of the product.