Proline cages.
www.constictorsnw.com These are awesome , but, they are custom and price would be high. I plan on getting some built one day, just not in the near future.
Have you looked into local cabinet builders? I'm in luck because a local cabinet builder near me is also into snakes. GRITS on this forum, or Beanie. He's actually building me some racks right now. Beanie also builds cages to house his snakes, sell at shows, and custom orders.