What's the best way to track consumer preferences for sustainable packaging?

Conjoint analysis is your best bet here — it forces respondents to make real trade-offs between price, packaging, and other attributes instead of just saying 'yes I care about the environment.' We ran one with about 300 respondents and found sustainable packaging only drove decisions when the price premium was under 8%. Behavioral data from A/B testing on your actual product pages can also help validate what the survey tells you.