“i used two pricing models to do that the gover granger model and the van westender model and so these are two different survey models that basically ask questions about pricing... are you interested in buying burner plus with xyz features for this price if yes survey done if no what about for this price ten dollars cheaper”

Van Westendorp and Gabor-Granger surveys quantify willingness-to-pay before any live test

Musetti used Gabor-Granger and Van Westendorp surveys on existing users before running any live paywall test for Burner Plus. These models show where price-volume curves cross and reveal the psychologically comfortable price band. Running both surveys first shortens the live experiment window and reduces the risk of pricing wrong at launch.