My primary inflation index is the per-lb price of Foster Farms whole chickens. It is not volatile but has competition and change.
Costco now has them at $1.19/lb up from $0.99 a year ago. 20% inflation.
Grocery Outlet will raise their price again to match soon. ‘Glad for Safeway and GrocOut discount back to about .99/lb now and then in past months. ‘probably wont be so low in coming months.