Ah, social media. If you are here now, chances are this isn’t your first visit: you’ve probably been here before – and perhaps quite a few befores. You deserve SOMETHING for that. π

And it’s Monday. (Ugh.) So, with Distances due in November, the second novel, Frontiers, is now only 99Β’ on Amazon.com and 99p on Amazon.co.uk on Kindle. (It is similarly discounted on other Amazons as well.)
And to mark Distances being available for Kindle pre-order, it’s now just 99Β’ on Amazon.com and 99p on Amazon.co.uk. (And, again, it is similarly discounted on other Amazons as well.)

The day after Distances is published on November 29, the price for both will return to $1.99 U.S. and similar elsewhere. (It is possible Distances will appear earlier somewhat sooner, and I will, of course, give you fair warning. π )
You have read my going on about Distances for much of the last year. So a discount for both Frontiers and a Distances “pre-order” seemed a good idea. You merit at least that much thanks. π
The opening volume, Passports, is already 99c/ 99p. That will remain unchanged for the foreseeable future.
If you are indeed “new” here (Hello!), the series is best read one novel at a time, in order. There are various character and plot issues in Frontiers and the upcoming Distances for which having read the earlier volume(s) is extremely useful. Those second and upcoming third books, respectively, are even chaptered numerically from where the previous volume leaves off.
That publishing “housekeeping” now explained, have a good day, wherever you are in the world. π