I saw an ad for fabric on Craigslist, and it showed a big tub of fabric for $50. In the tub are plastic bags of folded fabric, each bag containing multiple shades of a color.
I called the seller, and she said she bought it from a woman who made dolls for Fisher Price (I'm thinking this had to be a looooong time ago).
The good part? It would be a great opportunity to get every shade of solid you could ever want, all nicely organized and stored in bags.
The bad part -- she has no idea if the fabric is cotton, cotton/poly, or just polyester.
She lives in another town, and I'm not sure I want to drive there just to feel the fabric and find it thin and of an unsuitable quality. But I love the idea of getting all those shades of colors.
Can't make my mind up if someone sewed dolls for a big company if she'd have used cotton or non-cotton.