WooCommerce website price needs to be static in product page but it should change on the checkout page

I'm looking for a developer to create a fixed price in the product page on my WooCommerce website. Then, when customers enter the checkout page the price should change according to a specific pricing structure which I'd provide. My website is built on the well known WooCommerce platform and requires custom development in order to achieve the expected outcome. The right developer should be comfortable working with WooCommerce and understand exactly how the checkout page works.