Does anyone have experience with the (new-ish?) Store Search Advanced Module referenced here?

We switched to Doofinder a while back and it works well, but I have to manually update the index and it has a monthly cost.

I would have to upgrade to Pro level on 3dcart to get the store search, but there are also other Pro level modules I am interested in which would have some value.

So, thoughts on 3d's advanced/faceted search?