it's not even all FedEx, or maybe not FedEx at all. A lot of governments impose import taxes which can be damn expensive for nice electronics. I have a feeling if OP lives in Denmark that the $115 is for his government.
Yeah, i got this as well. not for the same amount though. I purchased the chest mount from GoPro's website with my friends credit card. Fed Ex delivers me the package and I sign for it at the door, with seemingly no extra charge. Then, after a week or so I get a bill in the mail from Fed Ex for $16.12 apparently for "taxes". but the bill doesn't say anything else, it simply states $16.12 taxes. I'm currently in the process of telling them they can go fuck themselves and I'm not paying them the damn 16 dollars, but they don't seem to be very receptive. I think they're now sending a collection agency after me.