From furniture to perfume, cheap dupes—or “duplicates”—are having a moment. Here are the tools that make them easier to find.

Eli Lilly releases cheaper vials of the weight-loss drug for self-paying patients and cuts the price of two existing doses.

However for more mainstream brands, Temu knockoffs are a bigger problem. In the case of the Stanley thermos cups that went ...

China has a lot of interesting knockoffs, like Michael Alone, whose logo clearly is just an upside-down McDonald's logo. The restaurant uses the classic red-and-yellow color scheme as well.