There are a few shops that are authorized distributors, if you search em on google shopping you should get links to a few of those places depending on where you're located. I was lucky enough to find a place that sold them that was only an hour away.
But otherwise, the official BK site is your best bet.
I just got a VHII humbucker from them. I had to special order it because I wanted a red one but I can strongly recommend ordering directly. Their customer service is great and the lead time was only a couple days.