Kensington SlimBlade Trackball $47.99 + Free Shipping ~ B&H Photo Video By admin | August 9, 2018 1:12 pm EST 0 Comment Clip the 39% off coupon on the product page. Kensington SlimBlade Trackball (K72327US) $79.95 – 39% off coupon = $47.99 + Free Shipping