It could be the amount of turn around time that a fabric has at the LQS. Since it sits on the shelf and takes up overhead costs, there is a point when it is no longer cost effective. It's share of heat, lights and rent dictates that it should have been sold within so many months; now it is costing the LQS to take up space on the shelf with no turnover. If that principal is applied to our stash, we have some very expensive fabric!! Maybe even wealthy.