Hi, thanks for playing. FYI, there is a building deck that is composited of 10 cards. You can choose from the top 2 revealed cards from the top of the deck. When you build either one, the built one will go into the discard pile, and a new building card will be revealed in place of the built one. When the deck has run out of cards, the discard pile will be reshuffled into the deck.
And… the cost of each building is missing on the UI atm. That was the problem I guess.