Seasonal currency stockpile

So I have 130K seasonal currency left over at the end of this fourth showcase round. I was hesitant to use seasonal currency to purchase any other items besides the buildings I needed to complete the city album collections because I didn’t know how much the other buildings would cost in later showcase rounds. I was afraid if I spent it on the other stuff like expansion items, factory speed-up tokens, etc. that I wouldn’t have enough for whatever I would need later in order to progress to the gothic tower. So now I have a bunch of currency that’s just going to be wasted since I already have the buildings available in this last showcase after buying the Chicago firehouse. It would be great if there was some transparency or way to know how much each of the buildings in the album will cost so you can budget your currency accordingly.