Hello,
First of all thanks for choosing our Theme, we are glad to be you in WoodMart WordPress family :-)
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I have test your product by sharing via Facebook and then I clicks on that product which I have shared both the prices are just the same. The price shown before sharing and after sharing on Facebook and clicking on the link through Facebook, both prices are same.
Video from desktop: https://jmp.sh/cpnBJTa
Video from mobile devices: https://jmp.sh/wqlpl21
If you just want to show the prices of the products including taxes on the website you need to Go to >> WooCommerce >> Settings >> Taxes >> Show prices on the pages with taxes.
For clarification see the screenshot: https://www.screencast.com/t/k89mikuRBdCb
Best Regards.