This has already been discussed on another thread here about a month ago. There are a lot of reasons why people cannot scalp here and we don't plan on changing those rules.
As for others advertising on Warchant and then selling for over face value, that is their perogative since they are paying a marketing fee to Warchant. I have a feeling that if individuals wanted to pay a fee to advertise here then the rules might get changed.
The bottom line is that when selling tickets here, they will be sold for face or less. If you wish to sell for a higher price then head to eBay.