Superrich is best if dealing with a lot of currency. Talk to girl for better rate, she'll call gal in Japan, it you have cash in hand you can get better than advertised rate.
Got here 20 odd years sgo , rare was US , 43 baht/ 1, ( bank rate ) went to ( you know, Chinese exchange ), if all in $100's and over $10k at a time, got 44.25 or so.