This case study details Waterpik's collaboration with Numerator to enhance their product offerings for Costco. Waterpik, a leading brand in water flossers and shower heads, recognized the need for a data-driven strategy to align their products with consumer preferences. In 2022, they partnered with Costco to reassess their bundle offerings, requiring insights into the preferences of Costco members. Utilizing Numerator's expertise, Waterpik conducted a custom Conjoint Analysis study to evaluate consumer attitudes toward product features, pricing, and messaging. The findings challenged previous assumptions and highlighted key preferences that shaped the optimal product bundle. To further validate these insights, Waterpik executed a follow-up Instant Survey, which corroborated the initial results. The combined research provided Waterpik with a clearer understanding of consumer motivations, enabling them to secure buy-in from Costco more effectively. This approach not only improved their product strategy but also strengthened their partnership with the retailer.