High grade bonus, limited quantity “Premium Buildings”
You can turn your buildings into Premium Buildings at a low chance when you upgrade to ★7, and they stand out immediately from their exterior. The building grade bonus is x14-16, which is much higher than normal ★7 buildings (x6.4-9.6), so the value is much higher as well. The max number is limited, so after all of them are distributed, you can only purchase from the Real Estate Trading Center or the Marketplace.
“Unique exterior” of the premium buildings
You can recognize premium buildings from afar, even with just a glance. This is because they have unique exteriors. If you look around Meta World, you’ll be able to spot them without much trouble. The exterior is decided based on the building’s size, so currently, only Ice Cream Cafes (2x2), Photo Studios (2x3), Hamburger Shops (2x4), and Seafood Restaurants (3x3) exist.
"★7 upgrade", low chance to upgrade to a premium building
From ★6, there’s a low chance of becoming a premium building when you upgrade — it’s possible to gain a premium building even after you’ve reached the max grade at ★7. The premium building’s type is decided based on its size. 2x2 buildings become Ice Cream Cafes, 3x3 buildings become Seafood Restaurants. Also, the quantity of premium buildings is limited by size, so after all of them are taken, you won’t be able to upgrade to a premium building.
Wait for the “marketplace launch” to see the value of premium buildings!
You can make premium buildings and buildings above ★6 to NFTs through minting. If you mint them from the Special Item Cabinet in the menu with 100 diamonds, you can sell them for MBX in the marketplace, which will be launched later on. According to Marblex news, the marketplace will open on May 26.