Interesting. None of the local nurseries where I live sell the rarer plants, I guess it would be due to geographic factors, namely temperature and humidity. Although, I have read from others that humidity is not a huge factor in growing majority of aroids, with the exception of velvet leaf species.
I am curious as to what would happen if I left a tropical plant, for example, a Philodendron gloriosum outside in the cold winter. I'm assuming the leaves would be the first to go but what happens to the stolon? Would it come back and start putting out growth when the weather starts picking up again? Or is it completely done for?