Why are some mixing bowls so much more expensive?

Price differences come from material quality (thicker gauge steel, tempered glass), features (nonslip bases, lids, pour spouts, measurement markings), brand reputation, and aesthetics. A budget stainless set will function perfectly for mixing, so you are paying more for durability, convenience features, and design. For pure function, budget sets work fine; invest more if you want features that improve your workflow.