Agreed... quilt supplies, patterns and fabric can add up and land anyone in the poor house. Here are some suggestions.
If there's a Hobby Lobby in your area, shop there - go online and print the 40% off coupon before you get your fabric and supplies.
Try miniature quilting. It will require less fabric.
One of the most underutilized resourses are public libraries. See if you can check out quilting books and magazines.
Finish what you start.