身边的经济学·社会常识英语30篇（5）
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Why Your Grocery Bill Feels Higher—Even With Coupons
为什么即使有优惠券，菜价仍感觉更贵？
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Stores often raise base prices slightly while offering bigger coupons—so the final cost looks unchanged, but margins improve.商家常小幅提高基础价格，同时发放更大额优惠券——最终价格看似不变，但利润空间扩大。
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Shelf space is limited and expensive, so brands pay ‘slotting fees’ to appear at eye level, and those costs pass to shoppers.货架空间有限且昂贵，因此品牌需支付‘上架费’以获得视线高度的陈列位置，这部分成本最终转嫁给消费者。
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Fewer competing brands mean less pressure to lower prices—even if production costs haven’t changed much.竞争品牌减少，降价压力随之减弱——即便生产成本并未显著变化。
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Packaging sizes shrink slowly over time (‘shrinkflation’), so you pay the same for 10% less cereal or soap.包装规格随时间缓慢缩小（即‘缩水式通胀’），你花同样的钱买到的麦片或肥皂却少了10%。
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Online grocery apps show personalized deals, but they also track your habits to suggest higher-margin items you’re likely to buy.线上生鲜App推送个性化优惠，同时也追踪你的购物习惯，向你推荐利润率更高、你更可能购买的商品。
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Seasonal shortages—like bad weather harming tomato crops—push prices up fast, while surpluses drop them slowly and quietly.季节性短缺（如恶劣天气导致番茄减产）会迅速推高价格，而供过于求时价格却缓慢且悄然下降。
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Many families now buy more ready-to-eat meals, which cost more per calorie but save time and reduce food waste.许多家庭如今更多购买即食餐，虽单位热量成本更高，但节省时间并减少食物浪费。
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Tracking just three staple items each month reveals real trends better than memory—and helps spot when ‘sales’ aren’t really savings.每月只跟踪三种主食价格，比凭记忆更能准确把握真实趋势——也能及时发现所谓‘促销’其实并不省钱。