Random House In House eBooks

2013 saw the advent of Unlike the Simon & Schuster digitals for indie authors through ASI. It's branch, Archway Publishing, is be run by Author Solutions Inc. Shelf Awareness says:

"Author Solutions will offer editorial, design, distribution and marketing services to self-published authors. Archway Publishing titles will be listed on Edelweiss, and Archway will offer a speakers' bureau, video and book trailer production and distribution services and a 'concierge service,' allowing authors to work with a publishing guide who will coordinate each step of the book production process. Some of its services are among the priciest for self-publishing authors, ranging

Do S&S authors have to pay for the eBooks? Unsure.

Another publisher in eBook production is Random House Publishing Group (RHPG). They offers digital-only imprints through their own staff and editors. The four RHPG imprints cover major genres, Romance (Loveswept), Science Fiction/Fantasy (Hydra), Mystery (Alibi) and a genre they call New Adult (Flirt).

RHPG writes:

Every book will be assigned to an accomplished Random House editor and a dedicated publicist. They will also have the invaluable support of Random House’s experienced marketing and digital sales teams, who know how to reach out to and expand each book’s dedicated readership.

Submissions go through the regular RHPG channels, and their site doesn't indicate any monetary outlay from the author. It's a regular submission route, however RHPG "does not accept unsolicited submissions, proposals, manuscripts, illustrations, artwork, or submission queries at this time. This includes submission of work previously published elsewhere." They only consider works that come through agents.