My suggestion is that you can put that every so often (set this in config menu for example) as every 5, 10 or 15 minutes a chat bubble appear on your character announcing (in order or randomly) each time an item and the price you sell your player from bazaar, moreover, the chat bubble with a line of text of this item and its price could go directly to auto-translate. Im suggesting it appear time to time because it could be annoying in cities to see so many chat bubbles, time to time is ok.

Futhermore, for that people dont want improvements or they are happy with bazaars as they are to put 10 items more out of inventory i thought that you can set this feature optional to see this bubbles or not. I think players bazaars would be a great way to sell things everywhere or people that buy some needed items from other players when they are far from cities, like arrows or food, if other player near you sells it, but honestly, noone check bazaars because you suppose that it only will contain items for 999.999.999 gil.