By looking at these images, would you think these parts are used? There is a very slight lip at the edge of the surface where the pads will rub.
They're used - you can see the marks on the center where they've been attached to a wheel. They also look scored - run your fingernail across those scatches; if you can feel the ridges, it needs resurfacing.
Have a look at a few Youtube videos on installing and cleaning new rotors, and you'll see what a new one looks like. Basically, it'll be in a plastic bag, and it will have an oily film all over it (which needs to be removed by a bedding-in procedure). https://www.youtube.com/watch?v=NXceohslvY4 is a good example of such a video.
Brand new rotors should look like this: