If you’re looking for big money, try selling those valuable resources or other unique items in Zone chat. By right-clicking an item you’ll be able to link any item in chat. Do so to share what you’re selling in Zone chat and let people know you’re looking to sell.
Items like Racial Lore Traits typically sell for 2,000 gold each. Stacks of refined crafting resources also sell for much higher in Zone chat than if you were to sell them to merchants. NPC vendors will buy stacks of 100 resources for 100-200 gold, while buyers on Zone chat will typically pay 1,000+ gold.
Be on the lookout early for blue or green gear. These will also sell for higher prices in Zone chat, if you’re willing to put in a little extra effort.
Rare gear is rewarded more often in dungeons or by completing Dark Anchor events. Look for team dungeons and farm them for improved gear, or watch the skies for giant anchors and clear them for a random reward.
ESO features a C.O.D system, allowing you to mail items to buyers. When sending an item for sail, type your price with the C.O.D feature selected and attach the item before sending. This way, you can send items without worrying about trades. The buyer will have to pay your price before they can collect.