I am quite satisfied since the tool is automatic, rechargeable, and user-friendly. The ceramic blades are very important as they do not oxidize the coffee. It is worth its money as it is used daily. We just have to see how durable it will prove to be. Less than a year later, with almost daily use for about 15 grams, its performance has noticeably decreased and now it requires more systematic shaking for the blades to "catch". Unfortunately, it is difficult for it to withstand much longer. I will come back.