Here is an example of using an A3S address to trade NFTs.
You could start your NFT collection in a specific address as your storage and rename it with the purpose. A3S addresses allow you to sell the address with NFTs P2P as a bundle instead of having to sell one NFT at a time.
To sell the address, it will be on OpenSea so you could list the address containing collections up for sale.
To transfer the address, you need to select the address in the toggle box and click on Transfer Ownership.