The senseo coffee maker is a machine that makes one cup of coffee at a time from specially prepared 'pods' of coffee. you can get the coffee maker at a very reasonable price. however, you can only get refill pods from the manufacturer and they tend to be expensive. this is an example of ?

Captive product pricing

Explanation:

Captive product pricing is used when the price of the core product is very low, but the value of the product that supports the core product is high.

Companies that have perishable material attachments, such as ink for printers, often use captive pricing.

At a certain point, the original amount included in the core product will be used to allow you to buy more of the accessory product (ideally from the main company).