I've gotten the SOTA Electromagnetic Pulser. It's been great. Easy to use (and since I find it easy to drop anything on a hard tile floor) easy to get fixed. They've always had great customer service. Plus they're in Canada---less shipping cost and time, I suspect.
But I don't know about the unit you ask about. I did try another brand of pulser while I was sending my dropped one in and it crapped out after only a couple months, but luckily I had my SOTA one back and was good to go. I was planning on giving the new one to a friend, so it was disappointing it quit working so soon. So I can only speculate it's a difficult type thing to make and the makers who try to cut corners or aren't very tech savvy might build a less viable unit. Don't really know though, and Beck's protocol doesn't have a zapper, only a blood purifier, so I doubt their knowledge base and by association their product.