Right now there are 24 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Industrial & Scientific › Additive Manufacturing Products › 3D Printer Parts & Accessories. 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: Pro, FLASHFORGE, ACTIVE, IdeaFormer, Mudder, Polymaker, Sabary, Sovol. Every item is a one-off, so the stock moves all day and new deals keep arriving.