3 September 2015. The Belgian ecommerce market is growing steadily, according to research by BeCommerce. The study predicts that around 5,000 new online stores will open in the country every year. It says that the majority of these stores, around 70%, are expected to be from retailers who already have a physical store and are expanding online to boost their sales further. Belgians have spent around 2 billion Euros on ecommerce sites in the first quarter of this year alone, across 20 million purchases. There are currently around 25,000 online stores in Belgium, up from just 10,000 stores 5 years ago.