We do not currently offer trials but you can still view most of our data using the Free plan. You can easily sign up at TIKR.com and set up an account for free with no credit card required.
You will see lock signs for data you can't access in the Free plan but you can still easily see what is available / depth of our coverage. See this article for more info on how to set up your Free account
We also have a number of demo videos on our YouTube channel