I purchased these studio lights about 5 years ago for $650 and they haven't seen much use. They use custom LED lights, not the light bulb sockets used by cheaper models. They have the diffusers, carrying case, etc. I don't remember the exact model and I don't have my receipt anymore. They also don't sell these on ProMaster's website anymore so I have no idea what the model is. Asking $150 or best offer. You can reach me at (763) 2OO-1551 if interested.