Find/Change Grep only finds one instance per paragraph, where am I going wrong?

Hi,
I've been using a Find/Change Grep to find any price with a comma and change that comma to a thin space (Newspaper's editorial style).
But the Grep only finds the first instance of this per paragraph.
Sample text...
"$200,000 $200,000 $200,000.
text at start of paragraph $200,000
$200,000 text at end of paragraph
tab $200,000."
In the sample the grep would miss the second and third price on the first line.
I've been using...
Find...
(?<=\$)(\d{3})\,?(\d{3})
also tried (\$\d{3})\,?(\d{3})
Change to...
$1~<$2
Is there anything I can add to find these last two prices?
I've been using this in combination with Batch Find Replace script, so different greps are set up for 5,6 and 7 digit numbers that start with $.
Thanks.

Try this,
Find what: (?<=\x{0024})(\d{3})\,?(\d{3})
Change to: $1~<$2
Vandy

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