I think with any parts and cars, there is a balance between and asking price and a sale price. At the swap meets if I see someting, I will usually pick it up and ask what seller wants for it. If it seems high, it never hurts to ask if there price is firm. Usually you can make a fair deal. If they wont budge, I put it down and walk away. Sometimes that motivates the seller to rethink quickly to accept a lower price. Most would rather sell the part than drag it back home with them. That's why it really doesn't bother me to see vendors offer parts and or cars here.