Full Developmental Edit with Comments on the Manuscript Plus Detailed Editorial Letter (10 — 20 pages) (speculationsediting.com)
While not nearly as insightful as a full developmental edit, it's also much cheaper but can still provide feedback on story - sized issues and direction. (jamigold.com)
A full developmental edit can be extremely helpful, if costly, or you can try a manuscript assessment or review, which will give you honest feedback on your first three chapters, or submission letters. (authorunlimited.com)