Agree. When you reach these sizes it is often more cost effective to build your own. There is nothing wrong with a wood frame cage...for its weight wood is strong and very workable. Just seal the wood well before and after you put all the holes in the surface for mounting screens etc. You could also buy two of the 24x48 cages, remove two of the side panels and join them together. I'm sure your Ousti would LOVE that space. Why have a large beautiful active cham in a cramped space? I always find large spaces give a cham a lot more options in its life, I can get a lot more creative with larger bushy plants and other "furniture" and create more microclimates for it, watching more of the chams' natural behavior is so rewarding. Free ranging a large species like melleri or Oustaleti is also a pleasure if you have a safe area for it.