Just thinking about pricing up my items ready for next month's craft fair and I discovered the link Zed posted is no longer working. Here's one I found which I guess does the same job craftybase.com/etsy/pricing-calculator
When I think of how much time and how many bits and bobs go into making some of the pieces, it's truly mind boggling to try to account for it all! And breaking even won't begin to happen for a long time when I think how much wool and silk and beads I've bought just in the past 8 months since I got the felting habit. But it has been such great fun and I am really looking forward to seeing people treasure the items they buy.