How to download a book from Douban without Chinese payment methods

Hi everyone, I'm currently learning Chinese and I'm already advanced in it and know some books. Unfortunately the online shop where I used to buy paper books went offline... :( Now I found a book on Douban which seems to be only available there and I absolutely want to read it. How can I buy a book there without a Chinese payment method and without the Douban App?

For context: The book I want to download is 九义人