import re
text = "1,000.03AM2,97.2323,089.301,903.230.0034,928.9911,24.30AM"
print( re.findall(r'\d+(?:,\d+)*(?:\.\d{2})?[^,\d]*', text) )
aW1wb3J0IHJlCnRleHQgPSAiMSwwMDAuMDNBTTIsOTcuMjMyMywwODkuMzAxLDkwMy4yMzAuMDAzNCw5MjguOTkxMSwyNC4zMEFNIgpwcmludCggcmUuZmluZGFsbChyJ1xkKyg/OixcZCspKig/OlwuXGR7Mn0pP1teLFxkXSonLCB0ZXh0KSAp
['1,000.03AM', '2,97.23', '23,089.30', '1,903.23', '0.00', '34,928.99', '11,24.30AM']