it's really not as hard as you think to build a cage. I just started by building a large wooden frame, then added plywood to the sides. Silicone sealed it and then painted it all with the proper paints/silicones. Added the floor (plywood), added doors and lights, then decorated! All in all, I spent around $400 dollars to set the whole thing up. IMO, that's a lot cheaper than buying a premade cage. That price includes lights, pumps, everything!