Some ink jet printers are very reasonably priced. However, replacement ink is very expensive. This is because once you purchase a printer, your demand for that brand of ink cartridges is very inelastic.

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This is because once a consumer purchases a printer, they become locked into using the specific brand of ink cartridges designed for that printer, making their demand for those cartridges inelastic. The printer manufacturers can then charge high prices for replacement ink because consumers have few substitutes available.

Some Ink Jet Printers Are Very Reasonably Priced