USKOSAT is an independent marketplace focused on Knight Online item and character transactions. The platform enables players to sell in-game items in exchange for GB or coins, browse available items, and request offers for character sales, referred to as ring sales. To sell items, users select what they want to offer and choose a delivery server; USKOSAT then reviews the list and provides a price offer through the transaction panel.

For a ring sale, sellers submit character details, including class, level, and race, to request a valuation. If an offer is accepted, the seller meets the buyer at an agreed location on the selected server, hands over the items or character, and receives payment in game currency. The site reports more than 1,500 completed transactions, over 2,200 registered users, and an average offer time of three minutes.

Available servers and transaction options may vary, so users are advised to check current availability and review the platform’s guides and selling rules