Other forms: knockoffs
A knockoff is a cheaply made copy of something. You can be pretty sure those Air Jordan sneakers are knockoffs if they only cost you ten dollars.
Anything fake that looks almost exactly like the authentic version is a knockoff, from knockoff designer handbags to collectible baseball cards to prescription medication. You can also call these imitation goods counterfeits, like a painting that sells for a million dollars only to be revealed as a Monet knockoff. The goal of those who produce knockoffs is almost always to fool shoppers into thinking they're buying the real thing.