Model building with budget restriction

I am a Jr. DS with 1+ years of experience. I have been assigned to build a model which determines the pricing of the client's SKUs within the given budget. Since budget is the important feature here, I thought of weighing my features, keeping each feature's weight 1 and the budget feature's weight 2 or 3, but I am not very confident with this approach. I would appreciate any help, or insights to how to approach these kind of problems.

budget build building client datascience experience feature features pricing thought