A customer? A customer! You are a customer, aren't you? I mean, I realize this isn't a proper stall, but I do have wares to sell. That is, if, um, you're willing to buy them. Have you come to buy my wares?
Aether-conductive materials? I think I have what you're looking for, but it won't come cheap!
Truth be told, I don't get buyers for these items all that often, but now that I have you─my new favorite customer─I'm sure to turn a profit, and then I can build a stall of my very own!
But I don't want your gil! No, dealing with gil is much too messy. What with all the counting, and sorting, and finding a place to─ Ahem. Bartering is much simpler, don't you think? There are a few things I'd be willing to trade for, if you're interested.