Same shopping list (eggs, milk, bread, chicken, vegetables, basics for the week):

• Carulla (Chicó): 142,000 COP (~$35)
• Éxito (Chapinero): 96,000 COP (~$24)
• D1 (corner store): 71,000 COP (~$18)

For identical items. Carulla is a pleasant grocery experience. D1 is a no-frills box. Switching to D1 saved me ~$60/month immediately.