Right now there are 35 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Tools & Home Improvement › Plumbing › Water Pumps, Parts & Accessories › Sewage/Effluent Pumps. 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: HP, Little Giant, VEVOR, Zoeller, Liberty Pumps, PROFLO, Superior Pump. Every item is a one-off, so the stock moves all day and new deals keep arriving.