Between here and here I count a dozen different CUA collections priced between $89.95 and $219.95 USD that share one very important and equally unfortunate quality: they're all stuck in Pre-Pub. Not one of them is half way there yet; most are far from it.
These collections include important works by such theologians and philosophers as Lawrence Dewan, Christopher Kaczor, Mathew Levering, Ralph McInerny, Joseph Owens, Nicholas Rescher, Martin Rhonheimer, Jean-Pierre Torrell, James Weisheipl, and John Wippel. Particularly notable contributors to essay collections include William Alston and Thomas Langan, plus others who contributed to (the many) collections lacking lists of contributing authors on their product pages.
There's plenty of important works, some of them classics and even commonly assigned undergraduate textbooks. They should be saleable.
Now that Faithlife has started listing books individually on Pre-Pub that are also in bundled form, perhaps these collections deserve some more attention.