I am actually not a buyer of egpal, but a gold supplier of them. What I noticed is that basically when they get an order they contact their suppliers on skype as to who can give the customer the gold. If they do not have any supplier online, the customer has to wait and they basically cannot provide the gold in 30minutes. It might also be that for some games they store gold on their own accounts so that they can give the in-game currency direcly to the customer. I think it is a reliable website, but by no means do they check whether the gold of the supplier is really not from using bots.