Thank you, Donnalynett and quiltsRfun, for mentioning
www.FavoriteFabric.com as a source for discount fabrics.
We don't run flashy sales, or use any gimmicks, but all of our fabrics are priced well below the suggested retail price and you can buy as little as 1/4 yard if that's all you need. That in itself can really save you a lot of money. (I know, lots of people are stash-building, but if you're trying to make a quilt on a budget, not having to over-buy is important.)