The format for numbers is 0,0.0 which is consistent with everything in the BX and is the way numbers are written in the US.
This format is definitly not the greatest for a lot of countries
In germany, some of the numbers would mean something completely different: "$37,267" would be "37 Dollar & 276 Cent"
Best would be to use "." (US) or "," for decimal separator, and spaces for number grouping -> "$37 267"
That might give the best result without to much confusion.
https://www.bipm.org/utils/en/pdf/Resol22CGPM-EN.pdf
"declares that the symbol for the decimal marker shall be either the point on the line or the comma on
the line,
reaffirms that ìNumbers may be divided in groups of three in order to facilitate reading; neither dots
nor commas are ever inserted in the spaces between groupsî, as stated in Resolution 7 of the
9th CGPM, 1948."
But aside from that, the design is really nice
The US, GB, Australia way of writing numbers is 0,0.0
I could argue that it would be confusing for these people also if I choose to swap '. 'or ',' or started to do my own thing.
Now I have looked into all the BX for the popular coins and they all follow the 0,0.0 way of formatting numbers.