I fell that if a player buys the upgraded balls, they should be able to continue to use it until lost! There shouldn't be a "wear n tear" on them. Or, just have a SPECIAL price for that sleeve of balls that will never wear out until lost. They DO get expensive after a while, especially when you can only can get 3 or 4 games out of one.
Thank you for taking the time to read this suggestion.
Mymechi