The base is made from plywood and No. 2 cedar, with the top made from knot-free cedar or pressure-treated deck boards. And the cost varies depending on your materials.
Wooden Bench for Less
Arbor With Built-In Benches and Planters
This arbor is built from pressure-treated wood, and you can customize it with your choice of paint or stain to finish it off. It's a multi-day process, but can be done over one weekend if you decide not to stain it.
This DIY outdoor furniture project is simple to build, (although you will need to know how to drive toe screws perfectly), and will cost around $250 to make.