The Iron Rule of RFM

For MONETARY VALUE, rather than coding by individual lifetime dollar sales (which again would require too many different codes), we create instead a small number of lifetime dollar sales groups, (e.g., $0-$50 buyers, $51-$100 buyers, etc.) What specific dollar thresholds should you use? If you’ve been in cataloging for a while, you probably have a good sense of where the breaks should be.