budejovice: Unmechanical also a repeat.
Edit: I assume prices will remain the same? Unmechanical was up for 1.99. Octodad currently 4.99.
Most likely. Prices usually only change between repeats if there was a pricing error the first time around from past observation of GOG sales. Occasionally however a game may be offered in a promo in more than one way, such as straight up sales like the flash sales, and also as part of a daily bundle deal which might end up having a greater or lesser discount on the same game, and occasionally both will be available simultaneously. Usually the bundle pricing requires buying the whole bundle for the better deal though, but each promo varies.
In general, it's safe to assume the prices stay the same. Also, if a price does change or have an oddity, GOG support will often refund the difference or make some other special goodie arrangement if someone asks them nicely (no guarantees of course but I know folks have often had good results in the past just for explaining the situation to support).