Walker Farm Hay-baler

John and his sons use a hay baler that allows them to harvest and bale in one operation. Despite its high cost of over $1400, they anticipate it will pay for itself in about five years. The baler has also enabled them to manage without hiring additional labor, improving their operational efficiency.

What benefit did the baler provide to the walkers?

What was the expected outcome of using the baler in terms of labor?