Consequences of Bottle Bills: How Bottle Deposit Return Schemes Affect Retail Prices and Lead Consumers to Larger Package Sizes
研究纽约2009年瓶子法案对瓶装水价格和销量的影响，发现零售商将受覆盖商品提价4%，销量下降6%，并揭示消费者意识形态厌恶和零售商运营成本是驱动因素。
Plastic waste has doubled in the past two decades, and less than 10% of plastic waste is recycled. “Bottle bills” are legislation to combat plastic waste by increasing recycling rates, by adding a per-bottle deposit that gets refunded to consumers who return empty containers. Industry experts are divided over the retail sales and price implications of such measures. To clarify the implications of such legislation, the current study uses a synthetic difference-in-differences approach to investigate how New York's 2009 law, targeting pure bottled water in containers of less than 128 fl. oz., affected consumers and retailers in terms of whether prices of bottled beverages changed and whether the bottle bill affected sales of bottled beverages. The study also identifies three mechanisms that can drive such effects. The results reveal that retailers increased prices of items covered by the bottle bill by 4% while keeping prices of other items, outside the bottle bill's scope, constant. Volume sales in the water category decreased by 6%. This study finds substantial differences in these effects across package sizes and provides suggestive evidence that consumers’ ideological aversion and retailers’ additional operational effort and holding costs are related to these sales and price changes.