The mocks worth your money are the official ones from GMAC, the makers of the GMAT. They're built from retired official questions, use the real scoring algorithm, and track closely with actual test-day performance. Take those before you consider any third-party mocks.
There are six official practice exams. Tests 1 and 2 are free on mba.com, and the other four are sold in two bundles (3 and 4, then 5 and 6). All six are functionally equivalent: same format, scoring scale, adaptive algorithm, and question source. None is harder, easier, or more predictive than the others, so don't agonize over which to buy first. Each can also be retaken once with fresh questions, giving you twelve unique mocks across the six.
But the bigger point is how to use them. Mocks measure your ability; they don't build it. Take one as a baseline to gauge the gap to your goal, then set them aside and build your skills topic by topic. Once your accuracy is moving in the right direction, take the rest spaced out, roughly one every five to ten days, reviewing each carefully. Judge yourself on the average across several tests, not on any single score, which can swing with the questions you happen to see that day.
So, start with the two free tests on mba.com. If you need more once you're in the test-taking phase, buy the bundles then and spread them across the back half of your prep.
This article goes deeper on using practice tests strategically:
GMAT Practice Test Strategy.
nammolestias
Hi All,
Need suggestion regarding which GMAT mocks to purchase