Pretty much completed in this pic. All four sides have the removable window panels. The side with the door has the removable panel built into the door. When in use you just turn the buttons that hold the panels in, slide them out and place them against the wall. I am ordering shoot thru mesh to place in the windows. They do sell it in a size that is perfect for these windows. The entire inside is painted black. You can see the cables running to the ground anchors. They are on all four sides. As you can see in some of the pics it was a dark overcast day, threatening to rain at any moment I felt rushed to get er done. I had just finished the roofing and was inside working on minor details when I heard a mighty rushing wind. I quickly got out and we jumped in the truck. Hail and winds in excess of 60 mph were giving the stand a test right off the bat. Amazingly not even a shingle came off (they had no time to self seal yet). Future improvement plans call for central heat and air, microwave and satellite tv (just kidding).
I have not added up the receipts yet but would hazard a guess at about 500 dollars.