I will say first off that I do dislike the current system, but only because of the amount of time it takes to sell anything.

First one must look up the price for the item they wish to sell, then summon their retainer, transfer said item, then set price, repeat process 6 to 13 more times and you have probably just wasted an hour at the least selling things.

Now when said like this it doesn't sound all that bad, but then realize that all your actions take 2-5 seconds for the server to register, so it's a big headache to sell anything. I've taken to selling my random junk to NPCs now and that's almost as slow but at least it's out of my inventory.

So first off Square, please fix that UI lag.
Next simplify the retainer UI, "Exchange Items" and "Manage Bazaar Contents" should be merged.
Lastly, when setting the price on your item there should be an option to "Check Price" to see what other are selling for.

Please implement something similar to this so that I will no longer dread setting up my bazars.