If you insist on paying then no one can stop you. When you go to these sites that have posted questions that are similar to the test, you are assuming that they have inside source to provide you the answers
WRONG
These people are just like me and you. They don't have any resources more than we have. You can create your own questions.
If you have the Book than just read 2, 3 and 4chapters two or three times and you should be able to grasp same type of information that some paid site will give you.
bottom line is if you cannot pas sthe test after reading these three chapter(and understanding them) than you are not ready for the test. Do not waste any money but just read and read again.
This is not rocket science, yo just have to read and remember lots of boring stuff, which you will still have to do if you buy it from another source.
This is just my opinion and should be yours too. Save your money don't throw it away.
But if you insist and must want to pay, then go ahead and pay me and I will create questions for you.
REMEMBER IF YOU BUY QUESTIONS NO ONE GUARANTEE YOU FOR THEIR ACCURACY OR MONEY BACK GUARANTEE