For the price, this knife sharpener is a decent value. The suction base is definitely the best feature—it sticks very firmly to the countertop, which makes it feel stable and much safer to use. The sharpening performance is only average. It improves a dull knife, but it doesn't produce an especially sharp edge. That said, considering it only costs around $10, I think the performance is fair. If you're looking for an inexpensive sharpener for basic touch-ups, it's a reasonable purchase, but don't expect premium results.
