Just to clear up how the forum works:
  • The person who starts a thread can edit it's title for a period of 5-min after submitting the initial post... then the title is locked.
  • A person can edit the contents of their post for a period of 24-hours from the time they submit the post initially... after that editing is locked.
These values apply to all forums, not just the BST forum. Extending the timeouts cannot be the solution as they need to be short for other reasons.

Honestly, do we need a solution more elegant than a convention that the person who started the thread post a message when it's SOLD, or they've BOUGHT, or they've TRADED the item listed.