I received the same email for this prize and started to look into it on the web and found alot of complaints about them. I sent an email to you, I am such a novice with this so I don't know if you will get it or not. I just thought everyone should at least be aware of the complaints against them. here is the link
Apparently there really are only 2 winners. 4998 people get offered the "win" of 300 dollars off. I declined the offer because they would not tell me how much the procedures would actually cost. My guess is way too much money. It seems to just be a marketing ploy.