They already have a price label. And I expect companies that produce it to pay market price for the robots, washing machines and electricity.
And if they don't, let's fix exactly that, not just patch up a problem a couple of steps down.
You're right that we need to be fixing the issues at the level they appear, but every level is being squeezed for the best cost. It's up to the retailers, consumers, and fashion companies to place a larger value on environmental impact and pay the proper price.
If there are negative externalities of production those externalities should be taxed, whether in the production of books, clothes or automobiles.
Otherwise, the point is spot on—environment impact should be dealt with at the source and factored into the price.