The article highlights the significant increase in egg prices in León, Guanajuato, Mexico, with a kilogram now costing 45 pesos, and a box of 30 eggs ranging from 75 to 100 pesos. The price hike is attributed to high temperatures impacting hen stress and reducing egg production, and the spread of avian influenza leading to a decrease in egg supply. The article also notes that egg prices in Mexico can vary by state, with different retail prices and wholesale costs found in different markets and cities.