Answer by warren for Final comma in regex

This seems to do what you’re asking for

[\D^]\d\d?(\,\d{1,2})$

Start with either a non-digit or the beginning of the line

Match one or 2 digits

Then a comma plus 1-2 digits (but no more)

from User warren – Stack Overflow https://stackoverflow.com/questions/75672986/final-comma-in-regex/75673993#75673993
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