Even worse, authorized HP retailers sell nearly expired cartridges. Happened to my mother who bought an HP-branded cartridge from ("shipped and sold by") Amazo

Even worse, authorized HP retailers sell nearly expired cartridges. Happened to my mother who bought an HP-branded cartridge from ("shipped and sold by") Amazon, then got a warning message when she installed it a couple months later — it had "expired" a month after purchase. Fortunately, on her particular printer at least, there was an option to ignore the warning, and the cartridge worked fine after that.