I don't know if it's good or bad (knowing Harman Kardon it's rather good) but unless you got the email from someone you know (i.e. if it wasn't spam) I woudn't buy it there no matter how cheap, for 2 reasons:
1. responding to spam creates a "market" for more spam
2. spam and scam are often not far apart - if you pay you don't know if what you receive will be genuine and if you receive anything at all
Good luck
