In Amazon, to become a verified seller you have to register yourself as a seller and you have to receive a TIN number from the tax department . I have no idea whether this works here or anyone is free to buy and sell on his own .
While I am also unsure about amazon and its policies but I think if you want to sell and buy things the digital goods section of this forum would be more helpful for anyone. You can buy physical coins here for cheap and then later auction them and sell for easy profit making.