It’s becoming increasingly hard to gather leads because there are too many sources and potential buyers. For a human, it’s virtually impossible to acquire all of them, and the gathering process will be very slow. That’s the reason why you need web scraping.
Maintaining the relevance and accuracy of data is the top task for e-commerce aggregator websites. If the aggregator fails to do this , its main advantage disappears – people use aggregators to find the most relevant information in one place.