I just realized I didn't read very carefully (guilty of skimming) my mistake I see you intended multiple racks. Sorry for that. I personally have an animal plastics rack. I like it well enough. I have an out of the box option as well. I do a lot of custom adapting with my company and if you are needing to ship a rack and live in any sort of city at all you may find going to a plastic fab. shop you maybe able to get it made cheaper than buying with shipping costs. I know the local shop by me believes I am a crazy for keeping snakes but they think they could beat the price on a rack if you include the shipping. (bare rack no tubs no wiring. they believe about 15-20% less than the price on a rack with tubs and wiring so roughly the same give or take.)