When you have an Xbox gift card worth $30 and want to sell it, there are several options available.

One place you can consider is online marketplaces. These platforms allow you to list your gift card for sale. You can reach a wide range of potential buyers from different locations. Make sure to provide clear details about the gift card, such as its value, expiration date if applicable, and any terms associated with it. However, be cautious when dealing with strangers on these platforms and follow the site's guidelines to ensure a safe transaction.
Another option is to look for local classified ads. You can post an ad in your local newspaper or online classified sites specific to your area. This can be a good way to find buyers who are nearby and may prefer an in-person exchange. It gives you the opportunity to meet the buyer face-to-face and verify their identity, adding an extra layer of security to the transaction.
You could also try reaching out to gaming communities or forums. There might be members who are interested in purchasing the Xbox gift card. By posting in relevant sections of these communities, you can target individuals who are likely to use the gift card for their gaming needs. Just be sure to follow the rules and etiquette of the community when making your post.