Smooth black, not diamond plate. It will likely be scuffed up, so request the discount as it is a damaged item.
Ok, you have to haggle to get this deal, and your store has to have it in stock (closing it out or discontinuing it). I had to go to 2 stores to get two of them. I also got a truck bed tool box in black aluminum diamond plate that they were clearing out for an additional 25% off the clearance price - about 269 at the end.
https://www.lowes.com/pd/CRAFTSMAN-CRAFTSMAN-48-in-Underbed-Box-Black/5002040585
Originally like 470, discounted on clearance to like 269, got a manager override to 200 even. I felt like I could have went further, but I do haggle often and I don’t want to burn a manager. Some store managers are wooden, others are business people and will deal. It also helps when you buy quantity of items. So if they have three, deal on 3 rather than 1, better for the manager. Just resell it to a pressure washer and tell them it is for their 12v pump and battery 
I could care less if it is scratched or scuffed. I’m going to hit it with the Agri guard coating anyway.
