Bought a demo later bit from them last year. Came with a blade cover and the blades were freshly sharpened. It was used at the Gull Lake tourney and probably had 50 holes at most on it. I’ve cut several hundred more with it since then and it’s still works great. Picked up a demo chipper bit last week for re-opening holes in my wheel house and that, too, came with a cover and works just fine. Another thing to consider, you know when you get it from D-Rock, the pitch and alignment are already going to be checked and perfect, even if it is a demo.