I've never bought these so I don't know if the price is cheap but I couldn't find them at local hardware stores and they were popular quickly. I bought these to attach things to the inside walls of my five wheeler camper. The sides of the RV are very thin, maybe 1/8 inch plywood, so you can't screw anything in and expect it to hold up. Most traditional anchors won't work with it either because it's too flimsy. With these folding rivets I can drill a small pilot hole in the wall and insert this rivet to create a very strong base on the inside of the wall. They also leave a very clean look. I wasn't afraid to use them in my wet bath because they are aluminum.