Cartel Coins can be bought with real money, subscribers receive 500 per month, players with a security key earn 100 per month, and you can also earn Cartel Coins through achievements.
The Dark Honor Guard's Unstable Lightsaber may be available for direct purchase from the Cartel Market with Cartel Coins. Buying the Dark Honor Guard's Unstable Lightsaber Directly from the Cartel Market with Cartel Coins The price and availability will fluctuate with what other players have to offer, the rarity of the Lightsaber, and its desirability. To find the GTN at level 10 or higher, look for the Galactic Trade Network section of the Republic or Imperial Fleet. The Dark Honor Guard's Unstable Lightsaber can be found on the GTN, which is an auction house where players can buy and sell unbound items. Buying the Dark Honor Guard's Unstable Lightsaber from the GTN with Credits The Dark Honor Guard's Unstable Lightsaber is a Cartel Market item, which means it originally comes from the ingame Cartel Market, and can be obtained four different ways - bought on the GTN, bought or traded from another player, bought directly from the Cartel Market for cartel coins, or found by random chance in a Cartel Pack. How to get the Dark Honor Guard's Unstable Lightsaber