Since the game requires you to sell via retainer, it's rather annoying that I need to physically write down the prices of everything I want to sell and then sell via my retainer. It gets even worse if I overlook something and have to cancel my meeting with the retainer, go to the market wards (or the market counter if I'm already in the wards), check the current common price again, go back and summon my retainer again.

I don't mind the retainer system, but I would very much like the convenience of actually being able to check those top 20 lowest prices of the item I want to see via the retainer so I'll be able to view it and sell it right then and there rather than running back and forth. This is especially true when I have such an enormous amount of loot in both mine and my retainer's storage and I have to physically look up each and every one at the counter to get single unit prices.