I am confused. On many for sale ads people list a price for an item.... say the price is $100.00. If the seller is interested in a possible trade they will list a trade value, most of the time the trade value is substantially higher. For example "trade value $175.00". Why is an item listed so much higher for a trade than a straight sale? Why wouldn't you trade at the same value? Negotiating a trade usually takes long and requires a little more effort are people wanting 75% more for their negotiating time? If so why don't they just list for sale only?