They claim to have solid silver which they call 106%. Silver is 107% of copper. They make no claim about the purity of their silver. It looks to me like they are a high end Chinese maker wth a very good US based website. The website is definitely done by someone with English as a first language. Shipping is $29 anywhere in the world and they don't mention any company that gets local shipping rates....
All that being said they look relatively well made and probably a good deal for the price. I wouldn't hesitate to give the silver digital cables a try since I like silver in a digital cable. Power cables do NOT look good to me. I like their woven interconnects but not their twisted speaker cables.
Jerry