Design a contamination-safe pricing experiment
WHAT IT TESTS: choosing a randomization unit that hides price differences. OUTLINE: user-level price tests leak via fairness perception, so use geo holdouts or time-based cohorts where everyone in a unit sees one price.
WHAT IT TESTS: whether you can run a pricing experiment without users discovering they pay different prices. ANSWER OUTLINE: explain that user-level price randomization risks fairness backlash and contamination when users compare prices. Propose geo-based testing, where whole markets get one price, or time-based cohorts, where the price applies to everyone who signs up in a window. Within a unit everyone sees the same price, so no side-by-side comparison.
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- #pricing-experiments
- #geo-testing
- #cohort-design
- #interference
- #difference-in-differences
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