Why is ipad WIFI cheaper than LTE?

WIFI version can only use WIFI to connect to the Internet, while LTE can use both data connection and WIFI connection.

The LTE version has many network connection methods, and you can surf the Internet without WIFI.

LTE is better than WIFI version.

Because the patent fee for the LTE version is relatively high, it is necessary to pay the patent fee for manufacturing this equipment, so the cost is high.