Hi,
What is the price of the product you configured in the backend ?
Are you talking abou the price of the product on the product page on the frontend of the website ?
I checked the product page on your frontend and I can see it listed with a price of RM 1,160.
On your email screenshot, I can see a price of RM 812.
So I concluded the issue you're talking about is your frontend product page.
I can also see you've customized the view file product / listing_price.php via the menu Display>Views.
So if you're really talking about the price display on the frontend product page, I would first recommend you try deactivating that view override and see how it goes. It's probably the customization in there which led to the issue.