Unit prices are easy to remember when you buy a single product. I bet you know the price of gas per unit immediately. What was the price of Pepsi per liter today? What was the price of Coke per liter? There are dozens and dozens of soda products alone you would have to memorize. And that’s just soda.
I applaud a store using its data to communicate to customers how prices have changed. We should do this everywhere.
I like the choice of SIlverstone for the case. I got one of those for my proxmox server. It was compact, but not so compact that I left a lot of skin and blood behind after mounting components. I will say that other manufacturers (like Fractal Design just seem to understand how to design an interior a lot better, though.