I have been there. Prices and quality are very reasonable for quilting fabrics. If I'm remembering correctly, their selection of garment fabrics is much more extensive. Lots of trims/notions.
Since you're going to be in the area, I would also check out Quilt & Fabric Shack in (I believe) Bird-in-Hand. Not far at all. They have the best selection of flannel fabrics of any place I've ever seen. Lots of other nice quilting cottons as well. Prices very good. Downstairs - a whole room on notions. Nice little shop.
I'm not at my home computer so don't have the link handy but do a quick google search on 'Lancaster, PA quilt shops'. There is a link that will pop up with lots of great shops listed. Check out as many as you can.