Price will vary according to length desired and the volatility of the precious metals market - prices here based on a $30/oz. silver spot price.
Argentium sterling silver is a modern tarnish-resistant sterling silver alloy which modifies the traditional alloy (92.5% silver + 7.5% copper) by replacing some of the copper with the metalloid germanium. As it retains the 92.5% silver content of the traditional alloy, it is still referred to as sterling silver. (Wikipedia)