Hand-held light meters are not just for a professional portrait photographer , hobbyists and enthusiasts can also use them to improve their photography.
And it isn’t necessary to buy the high end, all singing and dancing professional range meters either.
As long as the meter offers a good degree of control with ambient and flash readings than it should be good enough for most photographers.
Make sure the unit itself is small and light, don’t make the mistake of buying a light meter that is designed for studio work (unless of course you do want that specification!).
Lastly, shop around on the various Internet sites that supply photography equipment and you are also certain to find a bargain priced model that is just right for you.