what do you think of blade and soul RMT?

there are lots of websites spamming blade and soul gold selling in game,will the gold trading ruin this game,it it cheating? i think selling gold is cheating,it broke the mmorpg balance.i dont love the players who buy gold,because they will become very strong after they buy gold.i dont care how strong they are,because that is not fair.those bad websites spamming in game all use bots to farm gold,it is not legit.they use hack method to farm gold.those bots can make a lot of gold,and change