Doors from, Habitat for Humanity, store (50 cents each!).
2” x 12” lumber from big box store (15 dollars). Using the “good” ends of water damaged shelving (free). Feet made from fence post tops (3 dollars each). Miscellaneous hardware (free. I have over 300 pounds of misc screws, brackets etc.). RECYCLE WHEN POSSIBLE. Not only do you save money but you get the satisfaction of making something with your hands. No special tools were required. Hammer, screwdriver, saws are all we used.