Leda,
I enjoy hearing others stories, so if you ever have the time and feel like sharing, I'd love to hear about your AVs. Sadly, our grocery stores don't seem to carry the healthiest plants (AVs or otherwise), so I no longer look there.
Haha, I have a few "air cleaners" myself. What "unusual" plants do you have? There are quite a number of Kalanchoes, I am lucky I guess in that mine are pretty common (lucky with the names, otherwise I'd probably have no clue "who" they are).
My Mom bought the Aloe online when she was purchasing some outdoor plants. But, if you come home with a car load from Lowes, it's not my fault.
Planto