[nottorp]

In Romania the comma should be the decimal separator in theory.

In practice my online banking uses the dot, and doesn't accept commas anywhere. And it's a Romanian bank with a homemade web interface.

I just checked 3 random paper receipts i had lying around (from different stores), two use the comma and one the dot.

[maest]

The French, on the other hand, religiously use the comma as a decimal separator.