US-based online marketplace giant eBay has agreed to buy a 5.5% stake in Paytm's e-commerce unit Paytm Mall, reportedly for $170-200 million at a valuation of about $3 billion. This will mark eBay's third investment in Indian e-commerce space. It had invested about $133 million in Snapdeal in 2014 and had sold its 6.55% Flipkart stake after Walmart acquired it.