-See website: http://www.flcdatacenter.com/ and click "FLC Wage Search Wizard" and go from there.
which prevailing wage they will consider based on 2004 one or 2007 one?
-I think it should be 2007 one. But usually prevail wage is considered seriously during I-140 stage, so I think USCIS might not consider the prevail wage too much in !-485 stage.