Both the ebook version, for $.99, and the trade paperback version for $12.00 are now (16 March 2019) available on Amazon. The ebook version is currently available for FREE on Smashwords, Kobo, B &N, and Google Books. I haven't seen it listed on Apple Books yet, but it should be available shortly.
Update: On 18 March I contacted Amazon and requested that they price match the other ebook stores. I received an update from them today that says that they will decide by Monday 25 March. In the meantime, here is were you can purchase a FREE copy of Sailing to Redoubt. Smashwords offers a Mobi version that can be side-loaded and read on a Kindle.
Google Books https://play.google.com/store/books/details/C_Litka_Sailing_to_Redoubt?id=vRyNDwAAQBAJ&hl=en