Good Afternoon,
While you can certaintly build one of these yourself cheaper. I would say not by much cheaper. This one costs 56 dollars and shipping is free.
This is a good deal that I saw on ebay, if anyone is interested. I might get one for my birthday coming up in April and hang it in my garage. I saw a how to guide if you wanted to build yourself for 35 dollars or something, but when you take into account your time and taxes. http://www.garagegymreviews.com/diy-climbing-peg-board/ I might prefer to just buy one.