Yes, you can test Atlassian's products for 30 days, free of charge and non-bindingly before you decide to purchase them. //SEIBERT/MEDIA will be happy to help you with the evaluation. You can generate your own test instance thru https://swift.seibert-media.net
The test instance is fully functional and the same as the licensed product. The 30 day trial period can also be extended for you to really be able to decide if the software is right for you and your team.