A 60-day evaluation copy of SRM Standard is freely downloadble from the Product Evaluation Center after registering online. Only the latest GA version of SRM is available for free evaluation. SRM Standard evaluation is not for production environments.
vSphere Replication (VR) is a feature of the VMware vSphere platform. As such, it can be evaluated as part of the 60-day evaluation copy VMware vSphere.
VMware also offers a SRM hosted hands-on lab (HOL-1405) that lets you deploy, configure and manage SRM in a contained environment, after registering online.