Should I accept the 50% or risking to send back the product

Details / precisionsI had this problem:

So basically I ordered "Columbia shoes through the "" website, (originally it cost 87 eur, they took from my bank account 97eur). I have received a fake "nike" cap. If I want the total refund I have to send it back to China (they tell me that it woultd take ages and I also guess that it would be too expensive) or I accept the 50% refund which they "offer" me.

I don't know if I should risk to send it back but never reach the destination, or whatever (lossing 97eur plus the shipping) or take the other option and just keep the 50%, and they won....