I have now replaced 2 of my Velux blinds after 9 years. The quality and life expectancy are ok, not great. They are expensive replacements and the structure of the sides of the blinds is flimsy and the string mechanism has broken in both cases.
Net Promoter Score is a loyalty metric used as a KPI for customer experience, measured on a scale of -100 to +100.
To calculate the NPS, we first ask customers to answer the question "How likely is it that you would recommend this company to a friend or colleague?" on a scale of 0 - 10.
Customers who answer 0 - 6 are Detractors, 7 - 8 are Passives and 9 - 10 are Promoters. The NPS is the sum of % of Promoters - % Detractors.