Hi,
The reading list is typically through the duration of your studies. I would recommend finding second hand books rather than paying full price, they're the same but might be a little worn. Some of the reading literature can be found in the Library on campus, so double check before spending money you don't really need to. Your course will typically start close to the end of September, so it should give you time to email tutors and see what your library has to offer before purchasing books and should help clarifying any questions you might have!
Good luck with your studies!