I think, things like this work even if you know the underlying mechanism in the pricing strategy.
As an alternate example, my realtor regularly keeps in touch with me by email, using new letters, calling me on my birthday, etc and even though I know that he is being nice mostly because he wants referrals from me (definitely not because of my winning personality :-)), I still feel obligated to give him referrals.
Likewise, knowledge of the pricing strategy doesn't necessarily make you immune to it's effects unless you consciously stop and think and able to compare with other similar services/products and are prepared to take your time.
As an alternate example, my realtor regularly keeps in touch with me by email, using new letters, calling me on my birthday, etc and even though I know that he is being nice mostly because he wants referrals from me (definitely not because of my winning personality :-)), I still feel obligated to give him referrals.
Likewise, knowledge of the pricing strategy doesn't necessarily make you immune to it's effects unless you consciously stop and think and able to compare with other similar services/products and are prepared to take your time.