What Does Self-Pub Cost? The UK's Reedsy Reads the Receipts

This information is welcome, even if based solely in Reedsy's own transactions over the 15 months it's been in action (it won The FutureBook Conference's coveted new BookTech Award in December, as well). Debates have raged for years in the charred channels of indie-author blog-and-gossip sites about what one should be prepared to pay in order to have a book professionally edited and designed for the marketplace.