I tried the solution below, but I do not see the "Mark this thread as sold" option.
Am I doing something wrong?
A3: A moderator will not lock your thread. You have the ability to lock your own classified threads once an item has sold. Follow these steps:
-Navigate to the classified thread in question
-Just under the reply to thread button at the top of the screen is an option bar.
-Select the Thread Tools drop down menu
-Select Mark this thread as sold