An aspect of bazaars in-game that goes towards making them detested is the need to chat spam.
Think about what you'll be selling and where, as well as how many others will be doing the same.
If selling things such as salvage equipment, the target market will mainly be starting and 'mid-game' areas. For starting areas many new players won't even know what it is so the chat spam will need to include a brief explanation of what a bazaar is, where to find you, and what goods make it worth their time to check yours out. For 'mid-game', players will at least understand what it is, but you'll still need to include why they should check out yours over all the other people doing the same thing as well as where you're located.
I don't know about everybody else, but I've always detested having to do chat spam even more than having to endure it from others; it also detracts from the 'intended' purpose of the chat channel, leading to many complaint reports the developer has to review.
If selling rare special items, the target market will likely be experienced players with a lot of UEC in higher risk areas. Which also means how many people will just block you out of annoyance with your chat spam, so they never see your chat spam when it comes time for them to be interested in one of your wares?
Hopefully, they will have some sort of regional marketplace showing the current wares and the prices/location that can be pulled up on one's mobiglass.