I dont understand why you think wanted adverts should be free aswell as for sale adverts? surely if theres a part you are desperate for paying a nominal fee to be able to advertise the fact to such a wide audience wouldnt be a problem?

It may only be a £20 part you need this time but who's to say in a few months you wont need something else or want to sell something else???

I always thought £10 was a bargain before i became a mod!! just look how much ebay charges for one sale etc etc