This was one of the first things I bought on eBay, for around $7. I bought it to calculate postage costs for selling things on eBay. Unfortunately I didn't take a picture of it, but it's a dark blue colour like in the picture below, and the front only has a screen with 4 digits and a red LED.
It recently stopped working after the batteries leaked, so I opened it up.
It was very useful, especially when traveling. The only problem was the hook was difficult to attach to luggage straps. I have another scale of a different model, but if I didn't, I'd buy another one. Maybe with a strap to attach to luggage and a backlit screen.