Pimpy
If you're going to exchange your Iraqi dinar, let's just say for the sake of this particular example...3 to 1, congratulations you now got millions of dollars. So you go and you swap your currency and they're saying, 'Hey, you got $3 million in your account.' Yah!
You can't say to them I want $3 million dollars because the bank doesn't carry money like that no more. They might say...we are going to allow you to carry out $5,000 for today cash but we're going to have to set an appointment with you to come pick up the rest of the cash...If they have to order currency for you, they're going to charge you a fee because they have to pay a fee...