Can you do the inverse as well? Like Amazon but only the knockoffs?

That's pretty much the default Amazon experience, no?

	▲	storus a day ago \| parent \| next [-]
		Well, not exactly, for example if I search for LEGO I get the original but not the 10x cheaper compatible knockoffs.
	▲	criddell a day ago \| parent \| prev [-]
		Or maybe the AliExpress experience.