One of the most frequently asked questions is “Where should I buy my study materials?” The problem is that there is no correct answer to this question. You have many options and should research – research – research. If you asked 10 people this question you would probably get 10 different answers.
Buy your materials on Ebay and resell them when you are finished. At any given time you can find many listings for materials from the above publishers for sale on Ebay.
When you are finished with the material place it back on the market. You may not end up getting it for free but your cost will be significantly lower.