We currently don't offer a trial period in our Crawlera plans, but we do offer a 7-day money back guarantee if Crawlera doesn't meet your needs.
Your experience will vary a lot depending on the websites that you're looking to crawl.
If you're considering trying Crawlera, we suggest you go ahead and sign up for our cheapest C10 plan (at $25) and try the product. If it doesn't work the way you expect, contact our support team within the next 7 days and they will process a refund.
To contact support team, create a ticket after login to the portal https://app.scrapinghub.com/ -> Help - > Contact Support.