This fish tank stand in the link is built to hold a 75 gal aquarium filled with water, which must weigh upwards of 600lbs.
So I'm sure it would hold a couple cages that weigh 100lbs each.
Oops, the link didn't show up in my other post............. here you go
http://www.arbreptiles.com/cages/75g_stand/index.shtml