I ran across this Amazon fee calculator and thought it might be helpful to some of you... http://www.ppcalc.com/amazon_marketplace_fee_calculator.html It also includes fee calculators for Paypal, Ebay, and Half.com (I haven't tested it, so don't know if it's accurate!)
Thanks, it seems like a good idea. As for its accuracy, I'll see about that this weekend when I list some items on eBay!
Thought this Amazon / eBay calculator would be useful, I have used it and it seems accurate. http://heavenlyandroid.com/Comparer/default.aspx