DAKCorp via Amazon offers the DakPets DeShedding Tool for Pets
(pictured) for $14.99
with free shipping
for Prime members. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $5.11). That's $25 off list and the lowest total price we could find. It features a 100mm stainless steel comb, safe blade cover and comes with a Dog Owners Handbook and Cat Training 101 Ebooks.
Of note, Walmart has a similar tool, the ShedMonster Pet Deshedding Tool
for $14.97 with free in-store pickup, while Bed, Bath & Beyond
also has it for $14.99, also with in-store pickup.