Is this a US thing? I shop at European Amazon sites maybe once or twice a year, certainly never look for everyday items. Yeah the search is garbage but I've be

Is this a US thing? I shop at European Amazon sites maybe once or twice a year, certainly never look for everyday items. Yeah the search is garbage but I've been hearing about fakes for years and struggle to comprehend how is this allowed to continue. Is it mostly cheap items, or do they also allow expensive fakes?