Found this today whilst I was looking for something in the storeroom.
It's for a flat screen TV or monitor, can't remember the exact sizes but I wouldn't trust it with anything over 19" (up to you if you do)
This was set up and used for display, nothing was ever fixed to it.
I think a tenner sounds fair for it, would look quite good in a kids room with the DVD XBox etc on the shelves.