"Millionaire" online businesses selling on ecommerce site eBay have jumped 50% in key international markets Britain and Germany in the last four years.
This is despite currency swings that have slowed growth outside the US.
New data from eBay shows the number of million euro businesses selling on eBay grew to 1,095 from 731 in Germany last year since 2013.
Million pound-plus businesses rose to 663 from 443 in Britain over the same time period, it added.
EBay's two big European markets were collectively responsible for 30% of eBay's total net revenue of nearly $9 billion last year, although reported revenue in both markets dipped amid currency declines against the US dollar.
Two examples in England are MusicMagpie.co.uk, which buys used CDs, DVDs and electronics from consumers for resale on eBay in more than 140 countries, and cycling accessory seller MaxGear, now a £3.5m a year business.
While the company founded 22 years ago started out as an online auction site for consumers to trade second-hand goods, 80% of merchandise now sold via eBay is new, largely fixed-price items, the company reported in the first quarter of 2017.
Commercial sellers in eBay's five main European markets - Germany, Britain, Italy, France and Spain - export, on average, to 20 different countries a piece, said Phuong Nguyen, eBay's senior Director of seller growth, highlighting the international focus for many of its small and medium-sized export businesses.
The third largest country in Europe for millionaire businesses is Italy, where million euro-plus businesses rose 55% to 93 from 60 in the four years ending in 2016.
The US grew 6.7% to $3.87 billion in 2016, making up 43% of total eBay revenue, while the rest of Europe and other international markets gained 9% in US dollar terms for the remaining 27% of company revenue.
Other major international markets include Australia, South Korea and its cross-border business in greater China, eBay said.
EBay is scheduled to report its second-quarter results on July 20, when it is expected to report a 3.6% rise in net revenue to $2.31 billion, according to Thomson Reuters data.
