I finally got tired of the cord. For years I had a cordless drill, but this year I switched to a small cordless circular saw and had a DeWalt drill and hammer drill for sale, so I bought it with a couple of batteries. during the HD Father's Day sale. So that's two small, two big batteries. Amazing quality and feel. So I decided to buy a grinder to replace my 20 year old corded Makita. So the price of this package has increased. I can only think it's a "tool box" because it has a pocket and a battery. And that's the selling price. So, I caught it quickly. I ran it as far as sanding a 10 foot plastic wood putty fence before painting it. The "small" battery was enough for the whole job. And it did a very good job. I was so sorry I ruined the tool so I took out a can of compressed air to clean it later. I really like the deWalt battery powered line. I've been looking at this for a long time, Makita and Milwaukee. But I chose deWalt because the 20/60v battery is fairly interchangeable and the tools are well made.