personally, it seems a little small. . .
another thing to consider is the flooring of it, you have a mini rex (iassume, based on your name) and it might be good to consider the factthat mini rex get soar hocks easily. . .
i would compare the price of that cage, to makeing a cage out of NIC pannels. . .
another good point is that it is only 30 inches high. . .that meansthat both levels are only 15 inches high. . .a good rule of thumb forthe hight of a cage is that the rabbit should be able to do the bearstand (when they sit up and strech up, leaving only their back feet onthe ground) as high as they can go and not run out of room as an adult.. .
the rabbit that they have in the photo is a baby lop. . .so it isn'tvery big, add to that the photo is on an angle which means you don'tget a good idea of how even a small, young rabbit fits in it. . .
i personally would keep looking, and think about the NIC pannels. . .
thats just my opinion