Slitherine

One thing I want to add. The cost of FOB +expansions of FOBs should be in a UI somewhere, because now I am only guessing how much I need to do it. If the cost of FOBs + expansions could be listed in the reinforcement tab...(and/or added as a mouse over feature).I think it was working as such before the latest patch. This game is all about planning,not guessing.
I think this would be an essential feature to make this game playable. Like I said before,now I am only guessing but I still like the game.

I agree, the lack of easily accessible unit cost is bizarre in a game that is all about cost/benefit analysis.

From what I read on the forum, this is a bug. Did you already submit a bug-report? The makers are quite responsive.