I'll agree with you, buymastercoin.org is a fucking scam.  What kind of a loser wants to make a profit in that fashion?  However, the mastercoin foundation doesn't have anything to do with that crook.  Mastercoin foundation will also put advertisement from your company no matter how dumb the price is on your product.  Mastercoin doesn't endorse the advertisers who use the site.  However, I can see the conflict from your point of view.  I wish Mastercoin Foundation would dissociate from that scammer as it just looks bad.  Additionally, sometime people get tricked and it leaves a bad feeling.  buymastercoin.org was also the one spamming the hell out of the blockchain while the Mastercoin funding was occurring.  Idiots.