I took it back in the 80's, so, take it for what it is....
But, i would recommend taking a class. Why are you thinking about saving $1000 when you are going to spend $75,000. The LSAT goes a long, long way on getting into school. Where you get into school goes a long, long way as to where you get a job. Where you get a job goes a long, long way as to what area you practice in, what your goals are, meeting them, etc.
I took a class from a guy at Trinity. I would guess that UH or Rice has a similar course. There is always the national prep courses. But, do your homework on them, and their success rate. If the course has a low success rate, there is a reason for it. The LSAT is not a knowledge based test (At least it wasn't) It was, if I recall, a logic based test. There are different types of questions, and different types of methods which are used to address each question. That is why it is a tool for law school. It tests you using different methods for different issues. It asks you to apply a certain set of logic rules to a set of facts. Not law based, but somewhat similar to the logic problems you find in puzzle books. The course can help you identify the type of problem, and can help you identify the appropriate method to use to address the problem. For me the course worked. It allowed me to pick between schools for the school I wanted to attend, instead of having to settle for one.
Take the test seriously. Go to the classes. Read your own books. Take practice tests under circumstances that are similar to the test. i.e. time segments, etc. Grade them. Do over.
Sleep well the night before
The people I knew who took the test as a whim, or thought they could go in and do well because of their grades, etc. did not do well, either in the test, or in law school.
You will spend 10-12 hours a day studying in law school. May as well start now.
One more thing.....If you are afraid of the LSAT, GOOD. Use that fear to make yourself study. But, if you let the fear of the LSAT stops you from moving forward, you will absolutely die in law school.
Good luck