I had bought some fabrics from Missouri Star Quilts and did notice they had added an extra inch to each of the fabrics I bought. I'm not sure if that was intentional or not, but its nice because once I got my fabrics washed, ironed, and folded in half the cut edges do notline up exactly so I'll have to cut off at least an inch.
Unless I'm buying fat quarters or quarter yards for scrappy quilts then I buy a little bit extra because I can screw up the cutting. In that case I'm not going to go nuts over two inches I'm missing. So I'm paying for two inches I'm not getting, but that two inches is worth...what....$.50 on a $10 a yard fabric? I'm not going to flip out over $.50 worth of fabric. But if the customer service is terrible and the employees are rude and they cut me really short THEN I'll throw a fit.