I'm so excited - I just ordered my double level critter nation cage. I have a ferret nation cage, but my youngest female is small enough that she can fit right through the 1" bar spacing. The Critter Nation has 1/2", and I can't wait until it gets here!
I'll have no use for my FN when it comes. There is nothing wrong with the cage. It does have a few curved wires where I had curved the wider parts of the bar spacing to try and keep her from getting out. There is nothing structurally wrong with it, and the wires that I did curve all look the same. I'm thinking about putting it up on ebay. The regular going price for this cage (new) is around $250. What would be a decent price for a used cage? It's less than 3 months old.