When editing your OCs, you have the option to select if that OC is "For Sale," "For Trade," or "For Free." If you select one of these options, an icon will appear on the OC's preview image and character page to let folks know they're up for grabs.
Even better, all OCs with one of these options selected will appear on the new "OC Market" page, making it easy to buy, sell, gift, and trade OCs! As a reminder, we do not have built-in payments for OC trading right now, but you are welcome to use an off-platform payment method while we work towards this future.
You can check out all of the OCs for sale, for trade, and for free here, on our Market!