Adding custom field in the Woocommerce product data

Hello team,

I want to add a custom field say Cost Of Goods under the Regular Price field inside of Product data in the Products post type. This way when a store manager updates the price of a product he can also update the cost of it in the same place.

So far I only know how to add it in a new field group that shows under the Product Data itself. But that is not the ideal scenario.

I use MetaBox AIO and I add the fields via the UI. If this is possible only via code please show me how and I'll do it via code.

Thank you!