MMOAH is a reliable Trader of Tera. After buying Tera Gold, you almost immediately receive the it in-game because someone will come trade you it.
MMOAH promises to refund you and pay you back if anything happens during the warranty period. The customer service is great! They are on 24/7 and really helpful.
MMOAH is an approved site by MacAfee and internet sources, meaning you won't have to worry about any Tera Gold PS4 viruses/scams.