Sometimes business sell things in a group instead of just one thing. The idea is that if you buy the whole package, you can save money compared to buying the things separately.
A travel agency might offer a package deal that includes the flight, the hotel, the rental car, and tickets to local tourist sites for one price.
A cell phone company's package deal might be the cell phone, a second phone, unlimited talk, and X amount of data at a single (low) price.