The California Digital Library has launched eScholarship PLUS.
Here's an excerpt from the announcement:
The California Digital Library is pleased to announce a new print-on-demand (POD) and ebook distribution/sales service for books and journals published in eScholarship, the University of California's open access (OA) publishing platform. This service will enable publishing units within UC to develop hybrid OA business models for their publications. Books and journals enrolled in this service will be freely accessible via eScholarship while simultaneously offered for sale in POD and ebook formats via self-branded ecommerce storefronts and through retail affiliates such as Amazon.com.
In order to support this new publishing model, eScholarship has contracted with Lulu to provide a POD/ebook publishing and ecommerce platform. Working with the Lulu-powered platform will offer many significant advantages to publishing units.