Bought the E-Book, sadly it's one I already bought around early January. After he sent me the pdf file, I sent him a txt file with the same ebook to show him that I already knew about it and I guess there won't be a refund given with proof provided that I knew about it. Hence, all you gotta use is common sense to figure out the method.

Edit: since he says he has expenses to cover and rather not refund, method consists of using tor to sign on amazon and refund the orders from purse.io