I am selling the tank in the pictue below, which I used for my harvest mice:
As you can see in the photo there are a couple of places where the melamine is damaged at the top of the tank - apart from that all is fine. The bottom section is actually waterproof like a fish tank and the top part has sliding doors at the front that you can open (handy for refilling food and water etc).
Looking for £20 - any questions just ask.