Hi,
therefore I would use my new plugin WooCommerce Bulk Variations, here you can use the variations of a variable product and in WC you can set a custom price for every variation.
https://codecanyon.net/item/woocommerce-bulk-variations/21200696?ref=radykal
Marco Olmos
Hi Mr. Radykal
My request is if it is possible to implement the extra cost function for big sizes in Individual settings.
Thank you