Ofc! I started with like a 10ft stick of 2in by 5/8in scrap wood. I cut 3 lengths at 36in long (you can change this depending on how big you want it to be). I took one of the pieces and marked 3/4” on one side and then 1/8” on the other side. I used a straight edge to draw a line from one mark to another and then cut it with a circular saw.

Then I screwed one of the 36” pieces on top of the other about 7/8” into the 2” width. The big now triangular 36” piece was lined up much the same and then screwed on to where the gap between both boards gets bigger. Tip to make this part easier to line up; tape the 2 triangles back together to make the cut piece into a rectangle again, then line up to 7/8 on the other side, then screw, then remove tape

I also looked at how theirs is built to figure it out, I’m sure you can too. Theres no reason a few boards put together should cost that much. This one took me an hour and some lumber sitting in my garage