I have a Ranco, and I'm very satisfied with that. Are there actually plastic commmercial display cages? (Unless you are referring to those stackable hubs; I don't think i'd get into those anyway, until I get older and start breeding)

If there is, please send a link, also how would I be able to sell my 40 Gallon Breeder. Is there some sort of local state-wide classified that I can use? Craigslist? (free advertisement for them - had to say it)