Tanita makes scales in various price ranges. They can do a lot of different things and the more they do and the more they tell you the higher the cost. If you put the terms Tanita scales in a Google search, you will come up with prices that range from roughly $38 to over $800. I have taught at a college where they chose Tanita scales and they were a decent product for the money.
Also do not forget that the accuracy of the equipment is not always of the highest caliber based on the cost, and that those scales using bioelectrical impedance to measure body fat are nowhere near as good as a very good trainer doing skinfold tests or a hydrostatic weighing at a reputable place.