# How it works

> <mark style="color:purple;">Each center has its own marketplace!</mark>

There are several marketplaces in the game to sell your NFTs: \
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**Marketplace Laboratory:** to sell a potion. \
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**Marketplace Nursery:** to buy eggs from the nursery.\
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&#x20;**Marketplace Training Center:** to buy training or become a coach. \
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**Marketplace Players:** to sell your ZAIs, eggs, potions, or any other NFTs.