Comment by giantg2

It depends. In suburban areas there are free courts generally available at parks and schools. Rural areas don't have many options. Urban areas have fewer free options that tend to be crowded. Balls are the next largest cost since they are expendable - get lost, go dead, etc. Historically these were much larger costs due to manufacturing and construction differences. My guess is that a lot of this is generational carryover as the free courts are generally newer (1980s+) and the carryrover where well of players from prior generations mostly inspired their kids to follow suit.