For Sale Threads?

[Zippy G]

Hi All
Just wanted to put a question out there for your opinions.

When something is posted for sale and a post is created with description and pictures etc.
Once the item has been sold should 'oople' allow the thread to be deleted?
Or should there be a simple rule to say you can delete or edit the for sale bit but not the description.

Example:
For Sale
Selling sanwa reciever in good condition and fully functional(pictures here)
looking for £50.

Sold
Selling sanwa reciever in good condition and fully functional(pictures here)
Sold for £50

Just for future reference if ever required by the buyer or the seller?
Also people looking to buy or sell can get an idea of prices and condition of equipment using previous posts as a reference.

Just a thought to help honest selling

Maybe awkward to police but genuine sellers & buyers honesty will shine

Just a thought