Taurus made several 9mm handguns. Which model did you have in mind?
double trigger and hammers
The blue book value of a Used Ford Taurus varies based on what year the car is as well as what kind of engine and what the car comes with on the inside. However, a typical 2007 used Ford Taurus is worth about $10,000.
300 or so
100-250 USD. No known sn data published. You will have to contact Taurus.
I don't know what the numbers on the trigger are unless they are a part number, but you can add about 25% to the asking price for a single selective trigger.
75-300 USD or so
50-250 or so