Kaplan's Free LSAT is indeed created material (LSAC's licensing does not extend to free events. No test provider is able to give free LSAC material). However, the questions have been tested a million times over and we find students usually score about 1 point higher on average on the created LSAT v. an actual LSAT. This is after years of research.
The questions are good and the explanations (the link is provided at the event) are even better.
There is generally a "strategy session" at the end that includes information about the courses. An LSAT instructor answers questions from the test and discusses changes to the test with test-takers. You should take Kaplan up on the offer to benefit from their experience.
It definitely includes a sales pitch at the end, but it also include discounts on courses. I stand behind Kaplan's courses, but they aren't going to corner you and take your money. They're giving you a free testing experience, they want you to know about the product.
They usually provide candy during the sales pitch though. En profitez!
And, it's the only free test out there that includes a scored comparative reading section.