No they are not, but invariably, quality costs.
Did you read his whole pitch?
I received one of his catalogues years ago, and he completely and utterly convinced me. No fancy pictures, no good looking models pretending to be out camping, blah, blah, blah. Just several pages of text. That text convinced me that Wiggys are the only sleeping bags worth getting.
When entire units of US Special Forces units buy his bags out of their own wallet, this makes me think there is something to what he claims. When on virtually every military kit forum that I go to, people sing the praises of Wiggys bags, I think there has to be something to them. And my own experiences leave me with undeniable proof that they are the greatest sleeping bags on the planet.
Jerry is a very uncompromising individual. He tends to wee a lot of people off, but those are usually the manufacturers of inferior quality products.
His newsletters are definitely worth reading. Lots of reading there, but if you want an alternate take on a lot of stuff out there in the world of outdoor gear. Virtually heretical, but judge for yourself.