Right now there are 71 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Patio, Lawn & Garden › Patio Furniture & Accessories › Patio Furniture Sets. 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: Patio, Christopher Knight Home, GarveeLife, Wisteria Lane, Alpine Corporation, Merax, FDW, Flash Furniture. Every item is a one-off, so the stock moves all day and new deals keep arriving.