>> Did you replace them in the woocommerce plugin directory?
yes! here:
/wordpress/wp-content/plugins/woocommerce/assets/js/frontend
>> have you cleared your browser caches?
yes!
>> have you made sure you have sku's set for the parent and the variations? and that they are all setup correctly.
i can only setpup prices to variations. and in the frontend i see every time the lowest price for all variations!
>> link me to your website and ill see if i can see the issue.
ok! here is the testpage:
http://www.dominanztravel.com
USER: guest
PASS: welcome