Did you start both - and did you start "Fate" hoping it would be better than "Price"?
"Fate" was one of my first ST novels! I was running around in the early months of 1980 and snapping up what backstock I could find, in my impatience re the delays that had beset "The Entropy Effect" (due to Bantam being allowed to complete their publishing sequence).
"Price" was very hard to find. I eventually found a Corgi (UK) edition, but I was too impatient and had already read "Fate". I only had the Blish adaptation of "The Enterprise Incident" - and Marshak's contributions to "Star Trek Lives!" - to bolster me. Fresh from doing a few literature studies at teachers college, I immediately recognized Marshak & Culbreath as lit wannabees. My impression, then, was that they'd obviously come from doing serious university courses in writing and had tossed
everything into their novels. Symbolism, pathos, angst, duality...
Not surprising that Myrna Culbreath later gained notoriety for inventing a new system for teaching phonics to kids.
Of their four novels, the one I hated was "Triangle". It was extremely soap opera-ish, and my only memory is Kirk, Spock and the female guest lead, edging their way around a volcano ledge, professing their love for each other. I have no idea if that scene is really there, but that's my only impression.
I often tell people that my memory of "Fate of the Phoenix" is Black Omne racing down an endless corridor, with Jim Kirk under one arm and James the Romulan under the other, pursued by Spock and the Female Romulan Commander. (Probably yelling, "Come back with our Kirks, you dastardly villain!")