The disadvantage is that it may be too complicated and frustrating to the average consumer. On the other hand, transaction cost coupled with time and proximity of location can be an impediment. The web negotiations can take care of location proximity problem. The agent technology becomes useful for negotiations that extends over a period of time. AuctionBot AuctionBot is general auction server at the University of Michigan.
Users are responsible for encoding their own bidding strategy.
Kasbah Kasbah is a web based ad system where users create buying and selling agents to help transact product. First, the buying and selling agents are matched. Selling agents respond with either yes or no. The simplicity makes it more acceptable to the users. They know what their agents are doing in the marketplace.