An Exhaustive List of all 102 (and counting!) Real, Official LSAT exams available from LSAC, including paper tests on Amazon, free PDF downloads, LSAT India tests, and even Kindle versions.
UPDATE, SEPTEMBER 2021: Please note that the LSAT officially switched to an at-home, online, remote-proctored exam format (now called the digital LSAT, formerly called the LSAT Flex) after the June 2020 LSAT, aka PrepTest 90. Thus, PrepTests 91 and 92 have not been released in paper or PDF form, because they were part of the new digital LSAT exam format. Thus, they are now available—in digital LSAT form only—through the LSAC Law Hub and LSAT Prep Plus, and/or through your favorite self-paced online LSAT prep provider, such as 7Sage.