I may be putting a Polk product up for sale soon. I've been scouring the archives to come up with a fair price and have noticed that once someting sells one goes back and edits the original post to show it's sold. During this process I've been finding that they edit out the asking/sales price. I personally think it's important to leave the price in the posts so when searching the archives for info, the info is there.
Just thought I'd point that out and see if people concure with my idea.