It's not right. Either he should lower his prices, or the foundation tone down the advertising, or place some sort of disclaimer.
Normally, I think disclaimers are BS. Buyer beware. But since at least one guy was clearly sucked into this hole, we have evidence that the trap is a working trap and has actually caught people off guard. I say get rid of the scammy behavior. We don't need that.
If buymastercoin.com did not deliver on purchase you could call it "a scam".
You agree with the given price per mastercoin. The fact you are not checking anywhere else for better prices is not the problem of buymastercoin or Mastercoin itself.
Clearly this is your site. Nobody could defend this kind of crap.
The behaviour of buymastercoin has been offensive from the start. Its continued implied endorsement on mastercoin.org puts my investment in mastercoin at risk.