This cool update came across my desk last week. We are now providing free hosted trials of Team Foundation Server through partnership with TeamDevCentral. This is a good low-cost way to test-drive TFS and evaluate the feature set yourself.
The six-week TDC trial includes: multiple accounts so you can experiment with different roles and collaborate within a project. And up to 4 hours of guidance and/or support for the trial.
Here’re some more links to get you started if you want to check it out:
Hope that is useful!