If You Still Buy Brand Name Foods Even If They Have Cheap Brand Alternatives, Why ?

As an autistic person, I have a hard time switching between brands, due to my need for consistency. While off-brand foods tend to be the same, and in some cases I even prefer them, I have foods that are reliable. I know what a specific brand/type will taste, feel, and even smell like. I will be genuinely distressed if I consume a food and it has a taste or texture that I hadn’t anticipated.