This is free. Just come get it in Ballard.
It's currently in 3 pieces, the 4x8 piece of 3/4" plywood and the 2 supports. There is a black rubber mat that fits the bottom as well.
If you want it, you gotta take all the pieces. I cannot transport it for you.
I had built this for pull-ups and to eventually add rock and ice climbing holds etc on it. It's solid enough to be the base of a much higher extension, which was my original plan. It won't fit in my current apt so need to get rid of it.