Not sure where to start. I would have to say that they are shipping overseas. That would be the educated guess, theres not much margin (if any) if they are paying $4.00lb for mother boards of all sorts. We dont even do that and we are secondary refinar if you decide to refine will you get that price (you should get better). That market should dry up soon. Not everyone can pay high prices and expect to stay in business for vary long no matter how long they have been in business. We are all in business to make money and stay in business.
The next thing is are the certifed do they have the ability to show downstream for all of your boards and other items you send. (to most it wont matter) If you happen to land a large account and they ask you for yoru downstream vendor paperwork and they see their items going overseas you could have very well lost a good account.

I will always advocate my company and how we do business because it keeps businesses here it keeps jobs here and it keeps our information here not overseas somewhere where they can get to your, mine, or their personal information.