I needed a new bellows on my technikardan, and I could buy a Chinese bellows on eBay for about US$180. I contacted Custom Bellows to find their price, and it turns out they were barely more expensive, and, if I shipped them my old bellows, they would mount the new bellows on my old frame, saving me the trouble. The Chinese bellows were probably good too—I went with Custom Bellows, so I can’t comment on the quality of the other, but I’m a very happy customer of Custom Bellows.