In case it wasn't mentioned yet, another factor that some may consider when buying spares for MISB collection is the space you have if you would want those voluminous packagings/boxes be displayed as well. If you keep all your packagings, you know what I'm saying. Otherwise, just like me, you may just keep it in storage until you find a suitable place for them.
Latest Acquisitions: Metroplex
Incoming: ROTF Buster Optimus Prime; FP Defender, Insecticons
Needs List: Alternity Cliffjumper; TF Prime Bulkhead, Skyquake, Vehicons; Classics Sky Shadow, Junkheap