the HP 65 Tri-Colour ink cartridge is one of the most expensive inks in the world, costing a staggering $9,995 per litre. Despite its modest price tag of just $19.99 per cartridge, the cost ...

and even longer for the most expensive ones. A 200-gram high-grade ink stick from a producer like Kobaien costs over $1,000. And at some other retailers, prices can reach almost $2,000.

This means that the American tech company produces some of the most expensive ink cartridges in the world. Although HP cartridges often sell for between $20 to $60, the price per litre can be ...

More from So Expensive Calligraphy inkstones, especially elaborately designed ones, can cost over $5,000. While the traditional practice of using an ink stick and inkstone is less common now that ...