There's a great book about the progression of clothing, textiles, and fabric being scarce and expensive to commonplace and cheap. It runs through the various technological innovations (think cotton gin, but plenty more), culture, and economics. The Fabric of Civilization by Virginia Postrel. Great quote about Viking sail ships:
"Viking Age sail 100 meters square took 154 kilometers (60 miles) of yarn. Working eight hours a day with a heavy spindle whorl to produce relatively coarse yarn, a spinner would toil 385 days to make enough for the sail. Plucking the sheep and preparing the wool for spinning required another 600 days. From start to finish, Viking sails took longer to make than the ships they powered."
"Viking Age sail 100 meters square took 154 kilometers (60 miles) of yarn. Working eight hours a day with a heavy spindle whorl to produce relatively coarse yarn, a spinner would toil 385 days to make enough for the sail. Plucking the sheep and preparing the wool for spinning required another 600 days. From start to finish, Viking sails took longer to make than the ships they powered."