Open Cross Bosses Collection on NFTrade, you can find the link on the left menu of app.hotcross.com

Connect your wallet with CONNECT ACCOUNT at the top right corner.

You can filter by various properties and sort by the price, listing time, plus search with Token ID.

Find your favorite Cross Boss and click on it.

On the detail page, you can see the properties of that Cross Boss as well as the trade history.

Click BUY NOW and Checkout the order.

Confirm the transaction on your wallet.

After the transaction gets confirmed, you will see the LIST FOR SALE button, It means you own the Cross Boss. Congrats!