It is important to know that Lost Ark Gold players will only receive Coins of Courage from PvP matches when their Item Level is above 302. Otherwise, they will receive Tenacious Coins.
As with other currencies in Lost Ark, Coins of Courage come with their own vendors that are their own: the Quartermasters who hang around the PvP arenas. But the Quartermasters NPCs aren't currently offering anything for sale. A lot of players believe that Quartermasters are tied to the upcoming PvP season and probably will not offer anything until the PvP season commences later in the month.
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Assuming this theory is correct If cheap Lost Ark Gold this is the case, the Quartermasters could give players a wide range of rewards, like auras, titles for players, mounts, and upgrade materials. Furthermore, if those items do indeed belong to Lost Ark's PvP Season 1 in which case players will have only limited time to buy this season's PvP rewards until they're exchanged for Season 2 wares.