# The Power of the Retailer Preference Index (ft. Erich Kahner)

Page: https://stenobird.com/podcast/consumer-code-7115736/the-power-of-the-retailer-preference-index-ft-erich-kahner
Text version: https://stenobird.com/podcast/consumer-code-7115736/the-power-of-the-retailer-preference-index-ft-erich-kahner.md
Podcast: [Consumer Code](https://stenobird.com/podcast/consumer-code-7115736)
Published: 2026-01-07T15:33:00+00:00
Episode link: https://podcasters.spotify.com/pod/show/consumercode/episodes/The-Power-of-the-Retailer-Preference-Index-ft--Erich-Kahner-e3dahea
Audio file: https://anchor.fm/s/fb755f98/podcast/play/113640330/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-0-7%2F415664331-44100-2-b8f89092d18ff.mp3
Processing state: not_requested
JSON: https://stenobird.com/v1/public/podcasts/consumer-code-7115736/episodes/the-power-of-the-retailer-preference-index-ft-erich-kahner
Duration seconds: 3034

## Resource

In this episode, Lyden interviews Erich Kahner, Senior Director of Strategy and Insights at Dunnhumby, about the Retailer Preference Index (RPI). The RPI measures the strength of a retailer's customer value proposition and its impact on market share growth. Kahner discusses the methodology behind the RPI study, which combines consumer surveys with financial metrics, and highlights the five pillars of customer value proposition: price promotions, quality, speed and convenience, digital experience, and operations. The conversation explores shifts in consumer preferences, the importance of savings in the current economic climate, and the implications of the RPI rankings for retailers. Kahner also shares insights from global RPI studies and best practices for retailers to optimize their strategies for long-term success. Chapters: (00:30) Introduction (03:20) Understanding the Retailer Preference Index (RPI) (06:16) The Five Pillars of Customer Value Proposition (09:24) Shifts in Consumer Preferences Over Time (12:13) The Impact of Economic Factors on Retail Strategies (15:25) Quantifying the Value Proposition and Financial Outcomes (18:28) Key Takeaways from the RPI Study (21:29) The Evolving Consumer Landscape (24:41) The Shift to Digital Shopping (28:12) Consumer Frustration and Control in Grocery Shopping (29:38) Top Retailers and Market Dynamics (34:24) Strategic Groupings of Retailers (37:39) Unicorns in Retail: Balancing Quality and Savings (39:58) Challenges for Quality First Non-Conventional Retailers (44:33) Comparative Insights: US vs. Global Retail Markets (47:25) Leveraging RPI for Retail Strategy Learn more about Dunnhumby Follow Erich Kahner on: LinkedIn⁠ Listen to Consumer Code on: Spotify | Apple | YouTube Follow Lyden Foust on: LinkedIn | Instagram About S…

## Actions

- request_transcript: `POST https://stenobird.com/v1/public/podcasts/consumer-code-7115736/episodes/the-power-of-the-retailer-preference-index-ft-erich-kahner/transcription-requests` — Idempotently request low-priority transcript generation for this episode.
- read_markdown: `GET https://stenobird.com/podcast/consumer-code-7115736/the-power-of-the-retailer-preference-index-ft-erich-kahner.md` — Read the agent-friendly Markdown representation of this episode resource.

A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed.

## Transcript

Full transcripts are not published on public pages unless there is a clear rights basis.