When it comes to knife sharpeners and prices, you will have to think about several different things. First, it’s good to know that initial investment will be bigger if you decide for an electric sharpener. These can cost well above $100 and are more expensive than manual models that can cost as low as $20 per piece. The trick is to figure out what kind of skill you have when it comes to sharpening. If you know how to use manual knife sharpeners, you should buy that one since you can destroy your blades with electric model. If it is the other way around, get the electric sharpener since you will be safer and do the job a lot faster. In the long term, it is best to choose the product you are more familiar with. That on will be the cheapest for your needs.