Stuff for Sale on YouTube! HD Radio

I found this to be pretty hilarious – this guy is offering his Alpine HD radio for sale on YouTube. This is the first I heard of this. I can only imagine what this is going to lead to: Houses, cars, for sale. Collectibles, old nick nacks, professional services, limosine services(now there is an idea), escorts(of course my mind had to go there). If YouTube attaches an auction element to their site will they put ebay out of business?