F-color via Amazon offer its F-color Waterproof Dog Training Collar 2-Pack for $47.99. Coupon code "COLORF55" cuts it to $39.99. With free shipping, that's tied with our mention from two weeks ago, $20 off, and the lowest price we could find. It includes a dog training manual and features LED lights, 2,600-ft range, shock, tone, and vibration modes.