Trust us; we get it. With a traditional, all-around caged design, the Whitmor Folding Utility Shopping Cart is one of the most popular on Amazon (three cheers for Prime!), is backed by nearly ...

Like most breakthroughs, says Priceonomics’ Zachary Crockett, the shopping cart was the ... the idea for this two-tier shopping trolley, says Crockett, after seeing a folding chair and realizing ...