I'd really like to know what these calculations are if your asking other people what 1 cent is worth. Its not hard to work out.
You also need to consider more than that, if you are going to do this trade thing, that you obviously don't have the capabilities to do, you will need to convert prices for most countries as not all graal players are from the US, also how you will get your payments, they'd have to pay over paypal or some other form of payment.