I am surprised that no one here discussed the actual country of origin that a given fabric was imported from. I myself prefer and always on the lookout for a flannel from an European or North American place of origin (i.e. Italy, Portugal, US) first if available. My limited time spent in a supposed quality suburban LQS was mixed. One shop did not list the flannel's country of origin on any of it's bolt ends. Another shop just listed prominently only the name of the distributoring (brand name) company. I did not see where the bolt actually physically made or came from (manufacturing company). I find this is generally crucial for me at least as the first world made products are usually made far better with a work force that is not exploited. Quality follows a stable work force and is usually a given there.
I think it will be a good idea to show what a real fabric store that is not a LQS or a chain store is like. I live near one of two garment districts in the USA. I might take some photos of what stores one should make a point to visit when around one.