The plugin works well once set up. There is a lot of documentation that can help.
When the MDTF Filter is active, there are several unsolved issues. "WooCommerce Products per Page" plugin, WooCommerce Sort function, and hooks related to Woocommerce's before_shop_loop may not work when the MDTF filter is active.
I highly encourage you to try/test before you buy. Your Woocommerce customizations may not be compatible with this plugin.
(Note that there is a WooCommerce specific plugin available by the same author which does not offer functionality for custom meta fields (ie. Advanced Custom Fields ACF) but might have less incompatibilities when using that plugin.)