BKP are already advertising in Guitar mags, well in every Total Guitar issue they have a full page advertising BKP's.
They also have people like Steve Stevens, Jon Schaffer, Matt Bellamy, Mcfly (lol) and other famous people using the pickups, so i doubt they will need to pay someone to advertise it.
There is also the masses of people who are on the forum and people who have bought the pickups who will probably recommenced them at every chance.