Cary - if I built a platform like that in a tree in my front yard, I could rent it out for at least $300 per month to some college kids. That is one stout nest! It might need to be though, as eagles simply keep on adding to their nests every year of their approx 25 year life span. As a result, they can grow to incredible sizes. I heard on the radio that the largest nest ever measured weighed almost 1 ton.