I was wondering something similar.
If they're going to set it up so that you can search all retainers from one npc/counter/vendor, it just might be a sort of AH in itself.
If you're buying, you talk to the counter and search for what you want. The listings of that item appear and you make a selection.
If you're selling, you talk to your retainer. Maybe the same npc/counter you talk to when you're buying? Move items from you bag to your retainer and set a price.
If that's somewhat close, maybe they're allowing the purchase of extra retainers as a way to increase your "AH" slots. I hear there was a demand for that in XI.
My questions though are, if there's no option to search retainers anywhere in the world, will we be able to display our retainer as we travel the open world? Will people be able to inspect us and open our retainer to see what we have?
It's probably already been said, but its probably going to be a searchable AH type interface and the retainers are literally the space in which you put things up for sale.
I do hope they do more than that, I hope they are also actual storage for items you don't wish to sell!
Yeah, what he said. Edited, Jul 8th 2010 3:29am by Nalamwen