as someone who always likes to save money, not to mention getting the most out of the money I do spend, I did show maybe a little too much interest in such subjects.
even though it is annoying when you have tennis balls that still feel like new but have lost their pressure.
I have over 60 tennis balls right now since I last bought some, that was nearly three months ago and I have only used 6 balls so far.
each tube of balls cost me pennies compared to the usual sale price so I'm not really too fussed about saving them.
maybe it would be worth it if you bought balls at full price, but who would be silly enough to do that?