"the FVF is supposed to be 4% right?"
????
Where did you get that misinformation?
Final Value fees apply to the total transaction value (item + shipping).
In most categories, FVF are 10% for sellers without a store (9% if you pay eBay a monthly fee for a store).
Please take a few minutes to read and understand eBay's fee schedule:
http://pages.ebay.ca/help/sell/fees.html