Right now there are 16 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Electronics › GPS, Finders & Accessories › Vehicle GPS › Marine GPS. 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: Humminbird, Simrad, C-MAP, Navionics, Garmin. Every item is a one-off, so the stock moves all day and new deals keep arriving.