Dude, please...
I only can assume you are part of this.
Otherwise if you are able to take this linked forum anyhow serious..how about I sell you $100 bills for $7,95 ?
I can create an aggressive colored forum, transfer some coins between my wallets and post those txIDs. I might even ask some friends to post there how legit and trusted and verified I am. For sure I will offer my own forum based escrow as well. AND If you buy more than hundred bills you get 20% discount and for thousand bills you get a discount of 30%.
If you are willing to skip that forum part I have to invest some time in, I'm willing to share my saving with you and offer another 30% discount independent of your order's volume.
Deal ?!
***Just in case:
this is no real offer by me - no matter how legit it might seem to you - it really is a joke in order to point out something very very obvious
*EDIT:
OP, do you mind to post the mails you received including headers, please ?