That's a good question. I think it depends on the pricing technique.

For example, research shows that anchoring effects occur even when people are explicitly warned about anchoring before they make their estimate.

On the other hand, if people are aware of other pricing techniques, then those techniques could backfire in a negative direction. For example, researchers have found a "reverse priming effect." In other words, if people detect some persuasive intent behind the marketer, then those people are more likely to resist that persuasion attempt. So it could make things worse.