Woo-commerce pricing Price A B C

Hi we have a woocommerce store with 44.000 items the idea is that they will all have prices: Bronze, Siver, Gold or ABC.

So Bronze will be 10$ for all the products, silver 15$, and gold 20$ and if we change price A it should change on all 44000 products.

What would be the best solution, and maybe there is already a plugin that we could buy and use.