People obviously buy it based on the responses. I'm also curious, not snarky, why the op would start this topic & than proceed to list all the food she does buy? The answer to her question is herself!
I used to buy the steaks when they were less than $5 each & delicious. Haven't bought those in years. Everything else I can buy cheaper in stores or other sites. Some people probably don't have access to lots of choices, or just like the convenience and/or taste of some foods and the price is right for them.