I can't say enough good things about this plugin if you need to do any sort of bulk editing in Woocommerce. I run a store with a lot of product variations and this plugin has saved me about 40 hours of work at least. If there is a setting you need to change, or a want to see products by filters this is it. I started using the free version but quickly upgraded to the premium version because I want to support the author and the many extra features the paid version offers.
If there is one slight problem it is that the translations could probably use a little work, but that is cosmetic and doesn't effect the product performance in any way.