To list a property, visit your property page, click "Put For Sale" under the Marketplace tab, set your listing terms, and confirm. Prices can either be set in ETH or in USDC (see more about USDC here: https://www.circle.com/en/usdc). Prior to acceptance, listings can be cancelled at any time, but keep in mind that canceling a listing before the expiration date may require a gas fee for blockchain usage. Note that listings are final offers, and there will be no way to revoke or cancel your listing after its accepted.