Answer :

The act of sharing items such as printers, scanners, and other resources across a  Local Area Network (LAN) can be greatly benefital to users of the network and also saves money.

For example by sharing a printer across a LAN everybody that is connected to the LAN would have the opotunity to print to it without the need of individual seperate printers for each computer. This saves money (in not buying multiple printer for each computer), it saves on running costs such as repairs (less printers, less repairs), and it also allows the people that control the network (System Administrators) to have control over who can print as well as how many sheets they can print.