I read an study testing an idea similar to yours, but with wine. They organized a study in the guise of a wine tasting event where there were 3 bottles of wine, but 2 bottles were marked up (one from $5 -> $50 and another from $10 -> $90). Even though people didn't know they were tasting the same wine, they said the the more expensive one tasted better. The other half of the study was with the prices removed, people couldn't guess the more expensive wine. The conclusion from the study was that "Individuals who are unaware of the price do not derive more enjoyment from more expensive wine."
Source: http://www.wired.com/2011/04/should-we-buy-expensive-wine/