There is no one-size-fits-all answer to this question, as the price of phone cases can vary widely depending on the make and model of the phone, the type of case, and the retailer. However, as a general rule, budget-friendly phone cases can be found for around $10-$20, while more premium options can cost $30-$50 or more. Ultimately, the best way to find the right phone case at the right price is to shop around and compare options from a variety of retailers.