serious question
retailers dont keep track of SSN and what not for tax purposes
if option 2 is used what if hypothetically an order placed was for a "new customer" everytime. or if i as a customer just created a new profile every time and kept my orders under 500???
You should send them a letter like everyone does the ATF when asking for approval of new accessories. But yeah, even if they sent a letter to your house there's no way to guarantee who made the purchase.