Also offered a free audiobook version with temporary exclusivity rights. Since I was not prepared then to do it the right way I experimented with it. It goes so smooth and naturally, it makes any errors seem MY fault. Likely some are, but seems far far better to get the recording done with human voices- or have someone carefully edit. Words in parentheses go badly. I usually have some verse and foreign words. I only heard a sample, but maybe a mechanical voice to clue you in that it is idiot AI at work might be better than the illusion. Definitely a human reader is better and worth the paid performance.
(I only listened as far as the preview sample, but I had a lot harder things to come)
I mean to start a post on my own publishing experience. Mostly I observe all the methods that get people trying publicity and distribution. It boils down to a popular social media base and fans FIRST, then perhaps using paid assistance to gain readership. Or, the tried and true method is to start from writing occupations in the media and broadening out to fiction, writing support and communities of writers in the real world, perhaps starting in college. Finding a reader to support you in the craft and publication PR. I have not seen any shortcut using paid services first as worth the effort(as a rule). I think those that work are due to some success with free social media anyway.
Most of us would just like our works available and discoverable but the traditional slush pile can all be in print nowadays. The author finding readers is the real hunt.