I read that, and it doesn't say how it's done. It just says you can bazaar items with your retainer. I was merely asking how is it bazaared all the way on South Islands since most crafters are in the city.
The way I understand it is this: You need to "call" your retainer while you are in a market ward in one of the major cities. Can't find the market ward in your city? Well I'm not surprised, because I couldn't find it either in Limsa Lominisa (LL). In LL, its down near the blacksmith guild on the map. When you walk the road, you won't be able to walk any further. Look a the top of your screen you should see a "!" pop up. Click on your menu and click on the market ward you wish to enter (there are many).
Once you are in there, call your retainer. Talk to it and exhange items, then set those items that you want in your bazzar. Dismiss your retainer and it should remain there.
Once you have this retainer setup, you won't be able to call it anywhere else, and you will need to physcially go 'find' it in the ward again to replenish your bazzar or dismiss it. Once dismissed you can call it at any call location (bell), but it won't be selling anything for you, until you set it up again in a market ward.
Hope this helps. Imo, this is the most stupid idea I have ever heard of, I would like some of what the person who thought of this idea was smoking.