물경 + large number
no less than, a whopping (before a surprising number)
Example
그 그림은 경매에서 물경 백억 원에 팔렸습니다.
That painting sold at auction for a whopping ten billion won.
Word parts
물 do not+경 be startled
Literally 'don't be surprised': said right before a shocking figure.
Good to know
Old-fashioned; modern Korean usually says 무려 instead.