RT @ECB_Research: 🧵New Research Bulletin by @oenb’s T. Messner (@Messnerin1), F. Rumler & @ecb’s G. Strasser: “One product, two prices: the border effect in retail prices” https://www.ecb.europa.eu/pub/economic-research/resbull/2023/html/ecb.rb230420~fecc3b10ca.en.html 1/3