That looks like 50.00 worth of parts, nothing more. I dont know what is on the bottom so the price could fluctuate some. She be an easy build if you can work a chop saw, or have a friend that can work one.
Draw a diagram out and take the dimensions to home depot/lowes and they can even cut the pieces for you and you just assemble when you get home.
Most important part should be recessing the bolt heads on the bottom so it will slide