What exactly is the pre-order thing asking money USD 29.97 and another final payment, nearly USD 39.00, for unlocking your mobile network? They are playing a game with words, FROM USD 29.97, who will buy an item not knowing the total spent on it. If you are looking for a sincere phone/mobile network unlocking site, I strongly suggest you to search online for the reputation of the website first. Is it not easy to tell the customer the total amount of money to pay at the first place? If it is not a scam, then what else is?