If you are thinking why can't I place a for sale advert then it is simple. You need to be a Site Supporter minimum in order to place such adverts be it cars or parts to be offered. This does not affect standard members posting replies in such threads but you are not allowed to post for sale items in other threads unless you have paid your fees. It's in the rules
If you want to check the rules or become a site supporter then please use the links in my signature.
Thank you.