In case you didn’t know, the purchase prices of the buildings in the top 8 Tier Levels. decrease in price until they hit their base cost. (New multipliers are 4X, 4X, 3X, 2X, 1.6X, 1.4X, 1.3X, and 1.3X.) The starting point/most expensive is the building at the top level (like the New Level 58 Buildings). Many are just starting on their TSTO tapping adventure, some are a few levels behind. For what ever reason it may be, below is an updated list of the current costs to purchase a building. The list is here to help you in your quest for information.
The building price guide is broken into sections: Springfield, Squidport, and Krustyland. You will also notice the 8 upper level Springfield buildings will have their base price listed next to them, their current pricing, and the multiplier that created the current cost (base cost x multiplier=current cost). This will help when the next level is released. These lists will ONLY contain buildings (and a few decorations required for quest area).