When I buy fabric online, usually I buy from stores that have 1/2 yard increments. Sometimes need 2.5 yards, etc.
In a brick and mortar establishment recently, I asked for 1/3 yard because I knew it was all I needed for a scrappy quilt. (I am a frequent purchaser of 1/3 yards in most of the stores I shop at.) This one particular shop said they didn't cut in 1/3 yards. The clerk said to me that they cut at nine inches and 13.5 inches. Quarter yards and 3/8 yards. I actually thought that was silly. If the cutting mat is right there and they can cut at 13.5 inches, why not 12? The fabric was priced at 9.00 a yard. My request would have been a nice, whole $3. But I settled for 1/4 yard.