Awhile back there was an inquiry in the appraisal section in regards to a 93/4-ish Paramount with full Dura Ace STI. It sold for $1200 on Ebay.
In general full Dura Ace bikes start in the $450 area and go from there. I cant make out many detaisl but the OP's bike has cheap pedals, no DA dust caps and non-DA brake levers and its BIG. Realisticly its a $500-700 bike.