GoVote.org. The cost of getting a Private Pilot's License varies depending on which type of flight training program you you choose. Federal Aviation Regulations (FAR) Part 141 flight schools require an approved, structured course of training, which includes a specified number of hours of ground training.
A corn or a callus is the most common cause of painful bump on bottom of foot, which results from constant pressure or friction from your tight shoes. Repeated trauma can also cause a hard spot on bottom of foot. Calluses can be really painful especially if you often stand on your feet all day.
That wear builds callouses on the bottom of your feet. Callouses indicate pressure points on the feet. Over time callouses can build up and become hard, then when you pedal and push down on the pedals they can cause foot pain, aching and even some numbness. I see a proper podiatrist on a regular basis.