As one of its daily deals, Pennywise offers three Gillette MACH3 Turbo Cartridge 8-Packs (24 cartridges total) for $37.99. Coupon code "DEALNEWS1" cuts them to $36.99. With one cent for shipping, that's a buck under our December mention and the lowest total price we could find for this quantity elsewhere by $18. Each cartridge features triple anti-friction blades and a lubricating strip. Note that these blades require a Gillette MACH3 razor to be used. Deal ends today at 9 pm ET.