Know the value of your items.
They do respond quickly. But, they tried to lowball me on the values of my items. Even though their own calculator valued them higher. When I told them I knew they were worth more, they then decided they didn't want my business. So, sellers beware. They will value your items significantly less than their actual value. UPDATE: SMALL amount? I had 41 grams of 10k gold to send you. That's not that small.