What are /r/SuperStructures' favorite Products & Services?

From 3.5 billion Reddit comments

Yeah, he's definitely one of my favorites. I always use "dreamlike" to describe his work.

This book is certainly pricier at this point than the other suggestion, but this is the one I scanned this post from: https://www.amazon.com/Mass-John-Harris-Ron-Tiner/dp/1855858312