that is beautiful...unfortunately...not true for all of us...some of us live near shops that will not part with the empty cardboard from their bolts...some shop owners would rather send them to the recycle center than to share them with a customer...some insist they use them at the shop and can not part with them...one even told me they (HAD TO) return them to the fabric supplier they use.
so although does make alot of sense it is not so easy and cheap for all.