Porter's (www.porters.com) has an electrical silver remover setup for about $35. When "full" you change the cartridge (replacement about $15) and ship the "full" one to the manufacturer. They recover the silver and send you a check for value of the silver minus a processing fee.(posted 9151 days ago)The cartridge holds something like 30 troy ounces of silver, so at even $5 per troy ounce there is over $150 of silver in a cartridge.