Hey I just saw this thread, lol. I am Cool Cab (the large one) owner myself. Now having said that, you can definitely build this thing yourself even cheaper. I only have inside pics, same as already posted. It cost $2000 US and then your seeds. There is a exhaust fan on the inside back and the cooling tube on the light has a fan in it. There also 2 other fans below for intake. A duct attached to the exhaust with the filter on the end of it runs out the back. There is a removable cloning shelf with a flouro above. All in all a good starter thing. Since the first grow I did, I have made some modifications to it.