Question about armor?

I have my original Warrior from prophecies. Can I buy armors from the expansion packs (factions/nightfall)?

If so, do I have to beat the campaigns or something first? I cannot talk to merchants and I am half way through factions.

Thanks

Um,..let me get this right you're in factions but the armor merchant won't talk to you? What faction did you allied yourself with, Luxon or Kurzick? If you happen to be in the town that belong to a diiferent faction none of the npc there will talk to you.

As for your answer, yes you can buy any armors in Factions, there are armor crafters in Keinerg after that House Zu Heltzer(5k set), then the armory (15k set). Same as Luoxn counterpart, Cavalon and ...what was the other place place call? :P Also there are end game armor sets (15k) which you can buy after you beat the game.

Er yes certainly...You are talking to [Armour] peopla and not [Merchant] People right? Kainering Centre has an armourer as do both the Head Houses on Luxon and Kurzick sides at least

You don't need a Faction alignment to purchase from Kurzick or Luxon armorers. You need actual Faction Points. If your Luxon Faction is higher than your Kurzick (press H to check) or vice versa, you will need to earn more Faction from the side who's armor you want to get.

Alignment just gains you the "no" message that says you may be publicly aligned but you're a traitor.