I'm sorry but this is just a failure on your part. There will never be a product that requires processing that is cheaper than the raw ingredients to make it.

Ramen noodles are literally just flour, salt, and baking soda. 99grams of flour is enough to make noodles for 4 people. So, buying 10lb bag of flour for $10 means your ramen noodles come out to $0.06 per serving. Please, show me any premade ramen noodles that cost less than $0.06.