MZKaleem

Leave the OP as editable and Rule # Once sold, edit as Sold? Or possibly to PM a "mod". Perhaps they have to PM a registered user that is only used for those particular PM's for example "PMSold" could be the registered forum user and it only takes PM's and then locks the threads. 

Most PM's come up on emails so whoever has access to it, they can change it up without bumping threads?

Or create a Sub-Forum for Sold items, once sold it is moved into a sold items forum which doesnt re bump the thread

Yes, auto bump when using the [SOLD] message option. Hopefully that stimulates members to leave feedback on each other which is useful for us all when buying and selling.  Similarly, would not really be beneficial to delete sold items because then you cannot see what a member has previously been selling. I will just lock more of the older sales so no bumping. (It is all a learning experience)

fair points