Reader Andrew over at the AuctionBytes blog sent them an awesome calculator to show the difference between the old and new fee structure on eBay. It’s set up to do individual items and the monthly impact provided you know your average item cost and sell through rate. I (and I imagine many others) built a simpler version of this, but his is better.
Check out the blog post describing the calculator:
Then check out the calc itself:
Andrew also includes some good analysis about the long term impact of this. Well worth reading.