Answer:
Captive-product pricing
Explanation:
The user who buys razor will also require a blade because razor without blade is useless. Similarly the person who buys a laptop also requires a charger for his laptop. Just consider one more example, the printer you buy requires ink which means if the seller is selling one item at low price and the other at a high price means that the seller can bound the consumer to purchase its products or that the package as a whole seems economical from the customer perspective and manufacturer's perspective. This helps the manufacturer in making excessive sales.
