Amazon offers the Uvex Bionic Face Shield for $37.57. Clip the 15% off clippable coupon on the product page to drop it to $31.93. With free shipping, that's the lowest price we could find by $5. It features a polycarbonate visor with anti-fog coating. Deal ends November 15.

Update: The price has dropped to $36.44 before coupon, $30.97 after.