Thrift is a virtue, to be sure, but it's possible to take a good thing too far. You often see people drive up to the flea market in a Mercedes-Benz only to get into long, drawn out haggling sessions just to save a dollar.
精打細算是一種美德；但物極必反，一些開著「賓士」而來的闊太太，會為一元幾角展開拉鋸討價戰。