I would like to know if there exists a service auction website. By this I mean a website where individuals or organisations can sell their services to consumers by means of an auction.

Consumers would request a service, and specify a maximum price that they are willing to pay. Sellers would then bid to supply that service, with each bid reducing the consumer's initial asking price.

The website would facilitate processing of the transaction and payment where necessary. I am essentially proposing an ebay for services.

Ebay have a section on their website where people can advertise their services. However these are simply classified ads, and the entire transaction is between the buyer and seller.

Does anyone why ebay have chosen not to apply the auction model to services?

Also, does anyone know of a website that does?