I found a couple of sites that may be helpful to people wondering what to charge for their crafts. In the past, I've used the 3x cost of materials rule, and it seems to work for me.

SInce part of my job involves internet research, I thought I'd get some sources for glitter inf while on lunch today - hope this helps someone.
>http://asbdc.ualr.edu/fod/7013.htm>http://artsandcrafts.about.com/library/howto/htprice.htm>http://www.moneymakingcrafts.com/pricing_crafts_to_sell.html>http://www.craftmarketer.com/archives/issue10.htm

. . . and there's even an e-book you can download for less than $7!>http://www.craftmarketer.com/pricing-crafts.htm