Good not great

It supports tax but only VAT (Value Added Tax). You need to update the plugin so there is either a separate feature for adding sales tax or give the ability to change the name of the entry from VAT to whatever you want, similar to how you can change the titles of other fields such as the Add to Cart button, etc. Also, I’m using v 4.3.8.8 and you don’t have a selection for anything higher than 4.2.4 in your drop-down box on the review page.