Currency Express

I saw decent rates advertised on the store's signage but was unable to try the service because despite the store not closing for another 15 mins, the staff attending the stall had locked the door and refused to speak to us even to let us know when they would next be open. We stood staring at the digital signage for a while trying to locate their opening hours before they turned that off in front of us. With that attitude to customer service I don't think I'll return to give then my business anyway.

I have found time and time and time again that this shop has the best exchange rates in the area - sometimes even better than the market rate. I don't even bother checking anywhere else now.
Masses of notes available in almost any currency you can think of.
The one negative? That the staff's English can be hard to understand, and they don't always understand my explanation of what I want. So not somewhere to rush through unless you speak Korean.