Graphics tablet, Functionality and price

For someone who works as an illustrator or graphic designer, pen tablet is the must-have hardware. Because the pen tablet will facilitate their work.
Pen tablet just like a pencil or a brush, functions for sketching or painting. It would not be out of ink but to move data or translate the digital data into the computer.
The type and size of graphics tablets manifold. If in Indonesia which is famous Wacom. The type and size of course affect the price, the cheapest of which is around $85 up to the most expensive at about $349.