Highly recommended. It's very well-organized, and has great verisimilitude. With most magic item compendiums I have a hard time figuring out how to put them into context, as opposed to just random magic items lying about for no apparent reason. With the items in this handbook, they actually acquire the materials and craft the item themselves, and so there is a greater sense of accomplishment and pride in those items. It's well-organized in the sense that higher CRs tend to have more potent yields, more potent yields have higher harvest DCs, and both correspond to higher rarity items. So there is a natural gating mechanism as far as the so-called "balance" of items, where they're all in the right ballpark. (You might need to adjust a few things here and there.)