Wing is expanding into seven more U.S. cities through its partnership with Walmart.

The Mall lets shoppers build a personalized feed of brands, track sales and drops, and discover products across thousands of retailers.

Stord offers a network of physical warehouses and inventory management software for e-commerce. It bills itself as a sort of anti-Amazon, giving brands "the speed to compete" while still owning their customer relationships.

The e-commerce giant called the surcharge "temporary" but couldn't give a date for when the policy would be retired.

E-commerce company Quince has raised another massive round, less than a year after its previous raise.