Chapter 03 · Retention Ergo

The deepest roots bear the richest fruit

Eighth-year patrons spend over 5× more annually than first-year buyers. Tenure is the strongest predictor of lifetime value.

SPEND / YEAR (USD) $500 $300 $0 $487 $89 $156 $247 $312 $418 < 1 yr 1–2 yr 2–3 yr 3–5 yr 5–8 yr 8+ yr Avg annual spend per patron by tenure cohort
This is the Namib Sand Dunes design system, applied by Curio Design — a design-style library for AI agents. Full Namib Sand Dunes guide → designbycurio.com/learn/sand-dune-namib-erg