焼肉の食べ放題、3千円台&100種類でも店側は利益が出る収益構造…材料費率30% http://okane.robots.jp/2023/06/24/%e7%84%bc%e8%82%89%e3%81%ae%e9%a3%9f%e3%81%b9%e6%94%be%e9%a1%8c%e3%80%813%e5%8d%83%e5%86%86%e5%8f%b0%ef%bc%86100%e7%a8%ae%e9%a1%9e%e3%81%a7%e3%82%82%e5%ba%97%e5%81%b4%e3%81%af%e5%88%a9%e7%9b%8a/