Build your own garden bench using roof battens for under £50 / $60 - amazing value, and best of all you only need a very limited selection of tools to build this.
Buy plans here: https://keith-brown-shop.fourthwall.com/products/garden-bench-seat-made-... or here: https://www.etsy.com/uk/listing/1478739382/garden-bench-seat-made-of-bat...