I agree that it is all a matter of trust. If you have used that website before, and they take good care of their costumers, including refunding if the cart fails to release, then by all means pre-order.
However this, I cannot agree with. Let me reverse the situation:
While 80$ seems like an expendable amount to some people, it is enough to buy half a month of food for 2 people.
So you can see, if I could "throw around" 80$ for gas or taking my "girl" to a nice restaurant, I would not be buying or supporting the Gateway cart. I would buy original, since I can afford to do so.
The issue here is the target audience. If I could afford to buy originals, I would not think twice. I would just buy it. The problem is I can't. So if I want to play, I have to go "pirate" and buy the Gateway.