2 ms·
https://en.m.wikipedia.org/wiki/Van_Westendorp's_Price_Sensitivity_Meter https://en.m.wikipedia.org/wiki/Van_Westendorp's_Price_Sensi...
by Drdrdrq 6y ago
https://en.m.wikipedia.org/wiki/Van_Westendorp's_Price_Sensitivity_Meter https://en.m.wikipedia.org/wiki/Van_Westendorp's_Price_Sensi...