Founded in 1980, GTM Stores in Santee's Carlton Hills corridor operates a 25,000-square-foot showroom carrying over 20,000 closeout and overstock items from more than 200 national wholesale suppliers. The inventory rotates through electronics, furniture, housewares, clothing, and packaged foods — the same appliance and home-goods categories repaired and refurbished by Goldsmith Appliance Sales and Repair on Mission Gorge Road. GTM opened its first Santee location in 1983 inside the former Tony's Produce Building on Mission Gorge Road before relocating to three connected storefronts on Carlton Hills Boulevard in 1989, positioning the showroom between Santee Lakes Recreation Preserve and Carlton Oaks Country Club. The overstock pipeline sources discontinued national-brand merchandise from large chain retailers in quantities that anchor Carlton Hills Boulevard's retail strip alongside the weekly Santee Farmers Market three blocks east. The three-unit, 25,000-square-foot showroom maintains a live count above 20,000 SKUs sourced through a 200-plus-supplier closeout network, with recurring truckload deliveries cycling stock across consumer electronics, furniture, housewares, apparel, and packaged-food departments.