Money & WorkFact
The printer is cheap. The ink costs more than champagne.
In the razor-and-blades model, the base device is sold cheaply or below cost and the money comes from consumables: blades, ink cartridges, coffee capsules, game consoles and games. The vendor ties you technically to its accessories, often via chips or patents, and earns on every refill for years.
Useful: When buying, add up three years of follow-on costs, not just the entry price.
Source: en.wikipedia.org