Hi All - has anyone been able to get the Sandbox for a period of time < 1 year? Our use case is that we need to do some short term development but we don't anticipate that it will last more than a few months. We're (obviously) reluctant to commit to a full year of it and the associated expense since we only need it for a short time.

You can get it for one month if you want. Get 3 months and see how it goes.