Woocommerce product price increase based on country

I am looking to set different prices for a variable product on WooCommerce based on the customers Country location.
For example if a hoodie is ￡55 in the uk, I want to add ￡15 to the product price if the customer is the EU and then have the exchange rate on the new product price. For the rest of the world it will add ￡20 to the product price.
Is there a way I can do this with either a plugin or adding some code to the functions.php file?
I have seen the ‘WooCommerce Price Based on Country’ plugin, but this one needs you to type in every country, every currency and a price for every product variation, which is quite time consuming.

Any suggestions would be great, thanks ??