Why don't more eBay sellers use YouTube in their listings?

I've often wondered why more eBay sellers don't include YouTube videos modeling their items.  I recently came across this seller featuring Tom Ford over-the-knee boots, very nicely modeled in a YouTube video.  Although I would have preferred a little more walking, I suspect the seller didn't want to put too much wear on these brand new boots, which by the way, were listed for $3,200!