Get Congress and Obama to cut their spending in half and you might be able to find a few dollars for a study. Good luck with that.
The Democrats might try to use guns on you if you try to take away tax revenue from them....
Guns, homes, and cars are all private property, and individual sales of legal private property is generally outside of the scope of the federal government.
in your scenario, the buyer is asking the local authorities to help him protect himself by checking into the validity of an item, not a person's history. In the scenario of selling a firearm, the seller would be asking the police to research a the buyer's history. Big difference.
Even FFL dealers don't get history on their buyers. They simply get an approval or rejection on the applicant.
The only possible way that a regulation of private sales would work, is if all sales were conducted at FFL dealers, and all FFL dealers were either compensated for their time, or were forced to provide the service at their own cost (time is money).
There would still be plenty of people who would sell outside the system though.