Case Study: U.S. Credit Union achieves 55% lower CPA ($30 CPA) with Dstillery custom audience strategy

Custom Audiences Outperform Cpa Benchmark by 55%

Dstillery worked with a U.S. credit union to increase Tier 1 product applications — including auto loans, mortgages, credit cards, and memberships — and improve acquisition efficiency across channels. The challenge was to move more high-intent users through the application funnel and lower cost per acquisition.

Dstillery’s Client Success and Data Science teams implemented a custom pixel strategy that segmented first‑party audiences by application stage (started, midway, completed) to retarget non‑converters and prospect lookalike users. The approach delivered a $30 CPA (55% below goal), earned top-performer status in 2018–2019, and led to a 400% year‑over‑year increase in investment.