By market, up to how much more consumers are willing to pay for sustainable versions of fitness and sports equipment

For each of the below product/service categories, imagine there are two otherwise identical versions available - one that is manufactured or provided with environmental sustainability in mind and a regular version. Up to how much more would you be willing to pay for the sustainable version of the product or service compared to the regular one? (% of consumers from each market who would pay more for sustainable versions of fitness and sports equipment)