I bought one of these when they were first released by Logitech. I paid $80 and thought it was worth it as a laptop device to protect from over heating but especially the sound. I have purchased several of these which usually sell for more than it was worth new from $100-$250. If kept clean and used properly it will last. Don't bump the USB Cord holder, or it will break off. Don't drag your laptop off it or you pull the rubber feet off and loose them. I really don't see the need for them anyways. I would still pay $80 for them new, there isn't anything really as good out there.
Many laptops do not have great sound but plug this in and everyone has great sound.
I would like to see Logitech bring these back.