Yes, both CloudBees Core and AppVeyor offer a Free Trial.
CloudBees Core is designed for Medium Business and Small Business.
AppVeyor is designed for Large Enterprises, Medium Business and Small Business.
The starting price of AppVeyor begins at $29, while pricing details for CloudBees Core are unavailable.
Some top alternatives to CloudBees Core includes Clustered Cloud, Codeship, Semaphore, GitLab, CircleCI, Bamboo, AutoRABIT CI, Buildkite and Travis CI.
Some top alternatives to AppVeyor includes Codeship, Semaphore, GitLab, CircleCI, Bamboo, Buildkite, Travis CI, Razorops and GitlabRunner.