Portfolio cases, like the Fintie 2017 Surface Pro Folio Stand Case, offer great scratch protection.
This case encapsulates your Surface Pro in a leather-like material to protect it as you go from place to place. Soft-touch fabric covers the back of your device to prevent scratches. A flap on the front protects your device's screen when you're traveling from place to place. You can't extend your Surface Pro's kickstand with this case on, which is why its flap fits into a slot on the back to act as a kickstand. There’s an elastic pen loop for holding your Surface Pen.
Amazon sells the Fintie Surface Pro Folio Stand Case in seven different colors and over two dozen patterns for $13.99.
Buy the Fintie Surface Pro Folio Stand Case for $13.99 at Amazon