For Multi-Level, is it a one-time purchase that stays with you permanently, allowing you to always play more than one level simultaneously? Or does it wear off?

Also, does the price change from the 700 coins for the first purchase? How does it scale?

- one Multi-Level Power enables you to activate simultaneously one additional level
- price tag is fixed, you can get MLP for free ingame (rare)

Every powerup is a one time use item. You can get multilevel twice for free, playing on K-PX map (9th map)