A first-party extension plugin built for Magento. This plugin will install a pixel on your site, upload your products into a catalog for use in FB ads, and (optionally) auto-create an FB shop with your products.
Thanks for reporting this. Please consider sending us a pull request with this code so that we can give you full credit. If not, we will eventually address it.
There is a problem with price tax. The result is that I got price with double tax...cause the module add tax to a price including price....
The problem is in getFinalPrice method. You should make something like that :