For help in pricing your jewelry, you can buy this Excel spreadsheet from Eni Oken for only $5.00. It’s an instant download, so you’ll be pricing right in no time.
For help in pricing classes, the PMC Guild has a “Workshop Calculation Guide,” available as an Excel spreadsheet or a paper version.
Once you become aware of something, you find it everywhere. I found another one, this one from Thomas Mann, part of his Design for Survial Series.