Fabric Shack has low shipping, a huge selection, and will sell you 1/8 yd, they're the only ones I know who do. I'll look there first if I'm buying fabrics to audition. Most places have a 1/2 yd. minimum. Hawthorne Threads has low shipping and an enjoyable website, specializing in modern fabrics. Shabby Fabrics is great if you will be searching by color. I have found that Fat Quarter Shop has very accurate color representation. I really enjoy The Calico Cottage Quilt Shop, and you earn virtual cash back with each purchase, which you can apply to subsequent orders. I've only had one bad experience shopping for fabric on line (I never received the fabric, and they didn't respond to emails -- can't remember the name of the shop), but I had used PayPal to pay, so they got me a full refund. I prefer using PayPal because you don't have to enter your card information, so I tend to favor websites that offer that payment option. There are so many excellent on-line quilt shops. I usually discover them when googling for specific fabrics.