Monthly releases
Data Purl publishes the Shelf Indices once a month, one month in arrears. Each release is a dated summary of what moved: shelf price change for every department and category series, discounting, and official US inflation alongside. The latest covers September 2026.
Published 2026-10-09 · version 2026-10.2
Online prices in September 2026In September 2026, full prices of the same apparel products at covered US online retailers were +1.1% on a year earlier, down from +1.6% in August, and footwear +1.2%, down from +1.5%. Apparel full prices were -0.1% in the UK and +0.7% in Germany and Spain. Across 48 series, 18 rose faster than in August and 30 slowed or held.
Published 2026-09-29 · version 2026-09.4
Online prices in August 2026In August 2026, full prices of the same apparel products at covered US online retailers were +2.1% on a year earlier, down from +2.5% in July, and footwear +1.9%, down from +2.3%. The official US CPI for apparel was +3.6%. Apparel full prices were +0.8% in the UK and +0.8% in Germany and Spain. Across 48 series, 18 rose faster than in July and 30 slowed or held.