Picked up a Dark of the Moon "Autobot Ark" playset at Wal-Mart on clearance for $21.
Why am I telling you this? Because the canopy on it can open up, and a 3 3/4" Joe figure can sit inside it. Perfect base for a Star Brigade custom.
Even the "Autobot Roller" figure included is of a suitable size to be used as a drone for hazardous materials handling
So give it a consider if you find it on the clearance rack. Certainly more bang for your buck than the RoC Nightraven at its or=iginal price point.