She reveals the cost to replace her color ink cartridge was $103.99 and $59.99 for black ink. Printer companies such as HP use a business model called razor-and-blade. According to Investopedia ...

Investigate a variety of black ink markers, and find out why they look black. Blank inks are usually mixtures of a variety of colored ink pigments in liquid solvents. Chromatography is a technique ...

but the ink is contained in tanks instead of replaceable cartridges. Color ink tank printers have separate holders for black ...