Most of the transactions on S2Ki are conducted through Paypal (where the seller sometimes ask for Paypal fees in additions to the final sales price), and I know that some of us are selling things on eBay. I was browsing the internet and found this cool online fee calculator for both eBay and Paypal, and I thought I'd share with my fellow S2Kers:

Here they are:

eBay:

http://www.ebcalc.com/

Paypal:

http://ppcalc.com/

Enjoy!

Eric