Yes you can use less expensive fabric but I would caution against buying just anything. If you have a trusted friend that's been quilting for some time let them help you select and find quality fabric. I also would be careful and not purchase a bunch of fabric before you discover what type of quilter you are (this is a lesson from someone who's been there and done that). I over bought so many fabrics because I thought they were what I was "supposed" to buy and use - calicos, solids, safe prints, and colors. And just like your choice in style and colors in your wardrobe change, so will they in quilting.