Right now there are 80 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Pet Supplies › Dogs › Collars, Harnesses & Leashes › Collars › Electronic Training Collars. These are inspected returns and open-box items that Amazon sells and ships itself. WarehouseHunter puts each one next to its current new price, so you can see what you save at a glance.

Brands with the most offers here: SportDOG, PetSafe, Dogtra, INVIROX, PATPET, SLOPEHILL, Educator, Starmark. Every item is a one-off, so the stock moves all day and new deals keep arriving.