So you're implying that the profit margin is bigger on a full size bat? Perhaps the cost of wood is the same, but it costs less to make a harrow, which means that their gross margin is actually larger on a harrow bat
Being privy to know Kooks manufacturing prices, I know that the mark up on Harrow bats and full size bats is the same - so it doesn't matter to Kook which one they sell. To be honest, if they sell someone a nice Harrow bat, chances are that once the bat becomes to small for the player, he/she will probably upgrade to a full size bat with a year or two. Thats how you build brand loyalty and make your self into a multinational company!