pricepop
89COINS
pricepop shows the best price when clicking the icon of the extension example: visit https://www.amazon.de/-/en/ASUS-GU604VZ-NM038W-i9-W11H-90NR0BK3-M002S0/dp/B0C4ZNZD2R/ and click the extension icon. You should be able to see cheapest price of EUR 4,482 compared to EUR 5,042.56 on Amazon. (prices can change any time)
