AWWWW! I love you guys - so much help (esp. luky who's offered to obtain, pack and ship!).
really good ideas. at least now I know which places might actually have it - possibly, i can call before making a trip Queens/Brooklyn, or it's going to be that i'm going to have to hit the Hillside one on my way to Mother in law's in South Plainfield. at least I know there's some there.
it's true that there's probably not much use for that kind of stuff in manhattan. home depot will ship a pack of FIVE sheets for $79+shipping, but what would I do with all that? I've got a single 17 gallon aquarium and a 850 square foot apartment.