Hello,
Firstly, to assure that the Price adding feature for the Products comes from WooCommerce end and it is correctly working on our Test Site: https://snipboard.io/NMxElL.jpg
So, this is not a Theme end issue.
On your Site, it is also showing fine as we are seeing. Here are some Screenshots for reference:
https://snipboard.io/50mcPi.jpg : (Simple Product)
https://snipboard.io/SHTZCi.jpg : (Variable Product)
Please check back your Site after completely clearing browser and server cache.
Best Regards