It's defined in §1861(A)(1) as "Anyone, other than a nonprofit entity, who buys, sells, trades in, or otherwise acquires or disposes of junk or used or secondha

It's defined in §1861(A)(1) as "Anyone, other than a nonprofit entity, who buys, sells, trades in, or otherwise acquires or disposes of junk or used or secondhand property more frequently than once per month from any other person, other than a nonprofit entity, shall be deemed as being engaged in the business of a secondhand dealer." The law seems targeted at pawn shops and the like, but is broadly worded enough to apply to some random person buying stuff off of Craigslist.