Definately, best thing to do is phone Alex at Bristol G.S as said previously, he'll give you advice. I'm sure he'll tell you that if you wish to do the course you'll have to pay a set amount for module 1 to begin with which includes, the 2 week brush up course, all the notes (7 subjects) and a c.d. rom which you'll need to send in your progress tests. You will then have your own books anyway which you can study well before booking yourself on the two week brush up course asyou don't have to book in straight away! It'll be the same for module 2 (6 subjects).
No need to be buying books you don't need off ebay. You'll need every penny you can get down the road!