When you have an Xbox card worth 10 and are looking to sell it, there are several options available.

One place could be online marketplaces. These platforms often have a wide range of users interested in buying and selling various items. You can create a detailed listing about your Xbox card, including its value, any relevant details, and set a reasonable price. Be sure to follow the platform's rules and safety guidelines to ensure a smooth transaction.

Another option is to check with local gaming stores or hobby shops. Some of them might be willing to purchase Xbox cards, especially if they have customers who are interested in such items. You can visit these stores in person, bring your card, and discuss the possibility of selling it with the store staff.

Finally, you could also try reaching out to gaming communities or forums. There are many gamers out there who might be interested in buying your Xbox card. By posting in relevant gaming groups, you can connect with potential buyers directly and negotiate a deal. Just make sure to be cautious and verify the identity and credibility of the person you are dealing with to avoid any scams.