Ok, I'm shopping for a better armor.

I'm a level 21 rogue sin-trapper with the epic duelist tier 3 from the pirate's cove. I saw a whisperchain, but it was level 23.

I'm on thelanis, but it seems to be the worst place to buy something off the auction house for plats.

By the way, is there a good place to farm topaz or are they just really random and I have to pray the RNG god to drop what I need?

p.s.: there's a reason I have to stay level 21, I play with friends and I don't want to screw with their xp rewards.