Dutch Bros is cheaper than Starbucks. Most drinks in Dutch Bros cost less than Starbucks' beverages, even when they have the same size and same drink type.
Let's look at some examples.
If you go to Dutch Bros and try the White Chocolate Mocha in medium, you will easily find the difference. It cost $3.50 and was a 16 oz cup. At Starbucks, you get a White Chocolate Mocha that is 12 oz and costs $3.75. That's a saving of $0.25, not to mention the extra 2 oz you can get from Dutch Bros.