Buying used...

[sphelps]

If you post a link people will likely chime in and let you know if it's reasonable and provide you with information regarding the included equipment.

Ideally it would be best to get a system just including equipment and live rock, that way everything can be moved without water and there is no rush to get things setup. Once everything is moved to your place the rock can be temporary placed in a large inexpensive container full of fresh heated saltwater. The rock can remain in there until you have setup the tank. Depending on the condition of the rock you may want to do further treatments in the container prior to adding it to the tank.