Two experiments that show how small changes to choice and framing can turn a product page into a subscription engine. WHO: E-commerce & CRO teams INDUSTRY: Retail IMPACTED PAGES: Product Detail Pages, Subscription pages Experiment 1: Adding a refill quantity selector to the subscription page Hypothesis: If a brush refill quantity selector is added to the product detail page, then conversion rates and subscription units will increase because users will have more control over their purchase and see clearer value in subscribing. Image source: Optimizely Results: +4.