I can more or less confirm that. It's the only Titan book I don't own yet. The A Time To series also hasn't been on sale to the best of my knowledge..
I've been collecting the special priced e-books since they started being offered at a discount in 2014. There are still a lot of books that have never gone on sale even once in the past 10 years:
TOS - The Shocks of Adversity; First Frontier; Rihannsu #3 and #4; Crisis on Centaurus; A Flag Full of Stars; In The Name of Honor; The Starship Trap; The Children of Kings; Unspoken Truth; Windows on a Lost World; The Rift; Serpents in the Garden; Shadow Lord; Star Trek III adaptation; Cast No Shadow
The Great Starship Race; The Trellisane Confrontation; Present Tense: The Janus Gate #1; My Enemy, My Ally; Ghost-Walker; Killing Tme; Bloodthirst; Home is the Hunter; Enemy Unseen; The Rings of Tautee; Legacy; Assignment: Eternity; Past Prologue: Janus Gate #3; Sanctuary; Dreams of the Raven; Rules of Engagement; Heart of the Sun; Across the Universe; Day of Honor #4; The Case of the Colonist’s Corpse
Star Trek V adaptation; Star Trek VI adaptation; The Disinherited; Ice Trap; Chain of Attack; Death Count; Firestorm; Renegade; The Better Man; The Patrian Transgression; From the Depths; Mutiny on the Enterprise; Traitor Winds; The Cry of the Onlies; Recovery; Deep Domain; Harm’s Way
TNG - Metamorphosis; Debtor’s Planet; To Storm Heaven; The Romulan Prize; The Best and the Brightest; A Singular Destiny; Exiles; Guises of the Mind; War Drums; Possession; The Valiant; Fortune’s Light; Foreign Foes; The Devil’s Heart; Do Comets Dream?; Here There be Dragons; Sins of Commission; A Call to Darkness; Power Hungry; Gemworld Book One and Book Two; Gulliver’s Fugitives; Grounded; Engines of Destiny; Imbalance; Day of Honor #1; All nine volumes of “A Time To” series; Generations adaptation; Relics adaptation; Insurrection adaptation
DS9 - Warchild; Objective: Bajor; Invasion #3; The Long Night; Station Rage; Terok Nor: Dawn of the Eagles; The Tempest; Betrayal; Devil in the Sky; Bloodletter; Fallen Heroes; The 34th Rule; Wrath of the Prophets; The Laertian Gamble; Day of Honor #2; Far Beyond the Stars adaptation; What You Leave Behind adaptation
VOY - Dark Matters #3; Dark Matters #2; Invasion #4; Marooned; Day of Honor adaptation; Caretaker adaptation
ENT - Shockwave adaptation
NF - The Quiet Place; Martyr; Dark Allies; After the Fall
Discovery - Somewhere to Belong
Titan - Sword of Damocles
IKS Gorkon - A Good Day to Die; Honor Bound; Enemy Territory
SCE - Omnibus #3, Omnibus #4; Omnibus #10, Omnibus #11
Strange New Worlds #5, #6, #8, #9. #10
The Captain’s Table #1, #6
Shatner-verse: Preserver; The Academy - Collision Course
I just liked the idea that they might continue on through the original Pocket TOS books, one per month.
