I'm sure everyone here would like to see the pics.
Is flexwatt the same stuff that they use to do heated floors, like in bathrooms?
I don't mind paying extra as long as I know it's safe. I don't think making a product cheaper should be a main goal here. Even $1 more per foot would only add on $10-15 more on a rack that you are already paying $400-500 on.
I want my animals and house safe. That's my main concern.