Here is a listing for a lot of 7 that sold for $29.98:
So you can see at a price of $1-$2 each, you can make a nice little profit on this item. Also look at dollar stores, CVS clearance, Walgreen's clearance, and your grocery store. Keep those tips coming!
This is the kind of thing that Terapeak can really help with - understanding how well and item will sell before you try to go out and find it!