
A Letter to the Luminous Deep (The Sunken Archive Book 1)
4.1 stars from 430 reviews
Last checked: May 12, 2026
Full price — consider adding to your watchlist for a better deal.
Price range: $1.99 – $9.99
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Fans of these authors will like this...
- TJ Klune
- Freya Marske
- Silvia Moreno-Garcia
Fans of these books will like this...
- The House in the Cerulean Sea
- Emily Wilde's Encyclopaedia of Faeries
- The Invisible Library
Perfect for you if...
- You love stories told through letters, journals, and found documents that build intimacy and mystery in equal measure.
- You're drawn to cosy, atmospheric fantasy settings where magic feels lived-in rather than bombastic.
- You enjoy romance that builds slowly through shared intellectual curiosity and genuine connection.
Maybe not for you if...
- You prefer fast-paced plots with high stakes and constant action over quieter, character-driven storytelling.
- You find epistolary narratives frustrating or gimmicky rather than charming.
- You want a complete, wrapped-up ending rather than a setup for a series.
About this book
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Price History
Kindle price over time. Green zones = periods when the book was free.
Currently on sale at $4.99 — 50% off peak. Price has dropped 11 times over the last 3 years. Goes on sale roughly every 66 days. Typically stays discounted for 662 days.
Sales Rank
Amazon sales rank: lower number = better selling book. #1 is the bestseller.
Currently around #197K in the Kindle store — a niche title. Sales have softened 56% recently.
Rating & Reviews
Purple line = star rating over time. Blue area = total review count growth.
Currently 4.1★ from 430 reviews
Gaining approximately 18 new reviews per month. Rating has remained stable at 4.1 over the tracking period.
Sale Prediction
Actual Predicted
This book is currently discounted at $4.99. It typically returns to around $9.99.
Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.
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