WOW! No vibratory mechanism. I went to the website to see what it was like and didn't see enough information to really understand that it was only a mechanism to hold the polishing/sanding media. If the objective/design is simply to hold sanding/polishing media, it would be a lot less expensive to simply spray adhesive the media and keep it on a piece of aluminum/marble/hardwood or whatever. then it can be stored almost anywhere until needed. My bench space is way to skimpy and my budget way to small to spend $80 on fancy clamps that are stationary.
I've never though about mechanizing the process but now that it has been brought up I have a simple solution in my shop. I have a small 5" round vibrator that I keep next to my investment station, I use it to de-bubble prior to vacuum application. It would be simple to just put some spray adhesive on the back of a media and slap it on, turn it on, and polish away.