哪一天买东西最好？市场上，消费品销售一般分为开拓期、成长期、饱和期和衰落期。那么，哪一天买东西最好呢？新产品开拓期，商品产量不大，成本较高，价格并不便宜。同时，产品质量也不稳定。这时，消费者潇洒地在市场上走一回，买到的商品用经济价值衡量很不合算。产品... Which day is best for shopping? On the market, the sales of consumer goods are generally divided into the development period, growth period, saturation period and decline period. So what day is the best time to buy something? New product development period, commodity output is not large, higher cost, the price is not cheap. At the same time, product quality is not stable. At this time, consumers smartly in the market to go back and buy goods measured by economic value is uneconomical. product...