The smallest of the smallest of irrelevant corrections ever.
Agartha's Wet One underwater recruit, unit #1636, has a purchase cost of 10 gold, and not the 7 gold that is entered in the 3.23 of the DB (attached to the OP)
I did say it was a small correction

And feel free to ignore, as it is purely the pedantic OCD part of my brain that has forced me to report it.