Is there a huge difference between extremely expensive meals and just normal expensive but still affordable to the general public meals?

By extremely expensive I mean meals that are at least hundreds of dollar. I have heard of restaurants that mainly serve the super rich because their meals can cost up to thousands of dollars. Is there really such a huge difference in quality or just greed?
Update: And by expensive but still affordable I don't mean fast food like McDonald's or Little Ceasars I mean more like Applebees or Roadback Steakhouse
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