Answer:
razor-razorblade model
Explanation:
Condeong the scenario described in the question above, the right answer is "Razor-Razorblade Model"
The Razor-Razorblade model is sometimes referred to as the razor and blades business model. It is a form of pricing technique employed by producers whereby a dependent commodity is sold at a loss to the producer while the paired consumable good is sold for higher profits.
The purpose of using this pricing technique is to draw the customers closer with a dependent good which is cheaper. Then, making the expected profit from the commentary goods that essential to the dependent good.
