Blinkit, Zomato's quick-commerce arm, has expanded the network of so-called dark stores — the warehouses where it stores the inventory — and increased SKUs from 4-5,000 to over 10,000. The platform has also introduced new features, including payment installment options for purchases above ₹3,000 ($35.7), 10-minute returns for clothing and footwear, and split shipments to expand its reach. Quick-commerce players — including Blinkit, Nexus-backed Zepto, Prosus-backed Swiggy's Instamart, and Tata-owned BigBasket — are projecting to do annual sales of about $6 billion this year, according to a TechCrunch analysis. For established players, the battle increasingly also appears to be about controlling the full stack. Both Amazon and Flipkart now handle about 90% of their deliveries in-house, while Meesho has launched its own logistics service called Valmo to optimize shipping costs. Valmo is handling roughly 35% of all Meesho orders, Bank of America says.