Imagine you have a seller and a buyer who engage in bargaining at a market. Is there a one-word noun that describes a consumer who haggles (but not the seller)? I thought haggler, but that can be applied to both sides.
I want to distinguish between the members of a pair who engage in bargaining. I can call one the seller, but I can't really call the other a buyer, because the purchase does not happen if the bargaining fails (I guess the same objection can be made to the use of seller). I think offerer comes closest to what I am looking for, though I suppose a seller can also be an offerer.