I am playing on a single player world and just started exploring the world. I went to Lindon and did some quests and have just over 50 high elf faction and can now use a Lindon crafting table and trade with their merchants. After more adventures, I travelled to Rivendell and I can use the Rivendell crafting table and can do Rivendell quests for more high elf faction, but can not trade with their merchants. Is this just that I don't have enough faction, or is there some other faction I need?