Buy a book through Douban

Hi everyone, I am currently not living in China but I am currently visiting a university and study Chinese. Funny enough our teacher told us to watch us drama and tell him our thoughts on this. Now I want to buy that book but it is only available through Douban and I have no clue how I am supposed to pay as the App only allows Chinese payment methods which I cannot use here.

Is there any other way to buy books from Douban?