Cool concept, nice art and fun game. Gets really addictive ranking up those funds! ;-)
I encountered a bug: I reached day 16, bought a "Lightning Rod" but did not place it. Then day 17 came, I opened the shop again, and at some point the "Lightning Rod" card disappeared (or maybe I accidentally placed it?) and I could not place my next card "Farmland". I waited till day 20, but I still could not place it. Also swapping the cards in my hand (for 1500 coins) did not work, so I got stuck.