Its all about the delivery. I can say that I want $300k salary on an interview for $80k salary. However it is how I say it, to indicate that my self-worth is $300k but I can settle for 80. They might actually bump it up to 85 because they feel that I am a worthwhile person. But I won't say
"How much were you looking to get paid?"
"$300,000"
It would have to be as a joke, in some context where they know I am placing high self worth and the number is just a manifestation of it.
The anchoring is all about worth. Your brain questions "what is the value of the following item/service" to which your memory tells you "no records found". Now the brain has no context, it must make one up. The anchoring is all about creating the context. If the context already exists, anchoring won't work, or will work marginally well (needs to be proven, need some salesmen comments plz).