Jumping in here to confirm what has already been mentioned, but as was said already: you absolutely could have beveled that edge instead. Whether you sharpen the edge or bevel ultimately will come down to personal preference or intended outcome/use-case.
Is this wand intended to be viewed up close? Are you going to see the silhouette profile of that edge? In that case, you may want to add a few beveled loops to it. Otherwise, you can save some polygons by simply marking it as sharp and relying on the baked normal map to convey the idea that is it more rounded than it actually is!
As the classic saying goes: It depends. Your mileage may vary but it could be a great learning experience to see if there even is a difference between baking out a normal map from an edge that is sharp vs. a beveled edge!
