Are they always really crowded?
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However, I do recommend Everforex!! Whatever you see on their currency list at their website everforex.com/en/Rate/RatePanelFull.aspx that is the current exchange spot rate (keep refreshing the page as it is constantly fluid...might be better to physically watch it at their offices so you can exchange at your target rate). No fees whatsoever! and you can exchange straight away. A friend recommended this place and they talk straight. In Melbourne, they have two offices...one listed on their website in the city and the other in Box Hill but it isn't listed on their website. You can call the Box Hill office at 03 9898 8888.
Hope this helps!!
This Everforex mob offer amazing rates. I'm definitely going to be using them now instead of trusty old Amex. How can they be so close to the spot rate?