All off the rack bats are pure and utter crap, cost to much ,and even the sound they make is crap
Not true, I had a hit with my brother's Ricochet 250 yesterday, which has pretty much not been used at all. It goes as well as most bats I've tried, which was a surprise it has a high middle, but it seemed like a pretty generous sized one and when you hit it out the middle, it just made a lovely sound. (Normally use a lower middled bat) It's certainly worth every penny I paid, and goes to show that a hand-picked bat is the way to go. If I'm honest, every Kookaburra I've had has been excellent, not really had a bad experience with any of them, I have no idea why my perception of them has changed over time... There's been absolutely no reason for that!
Generally speaking, I think that the batmaker will generally have a pretty good estimate as to what kind of weight he could get off a specific cleft, and makes his mind up on the weight and size then gets crafting. This will not always be 100% accurate, as willow density varies throughout the cleft, and I find that edge sizes can very often vary with handcrafted bats, I think one of mine was 41mm on one side and 38 on the other!