I've been reading about some of the cage and rack setups and had a question. I noticed in a lot of the reptile stores there is only a spot light available. In one near us they just have the herps in a 'heated' room at a ambient 85 degrees throughout.

I suppose what I am asking is, do the stores do this just to save a buck or is it a feasible option if someone doesn't wire every rack of their caging with flexwatt, or alternative heating.