Excellent value for money. This is a quality replacement filter for your Neato robot vacuum. You should change your filter at least once a month, and this valuable pack of 12 filters lets you do just that for just over a dollar a month. Sometimes replacement parts don't match the manufacturer's version, but that's not the case with these filters. I am very happy with my purchase, as long as I have a Neato vacuum I will use filters from this company.