He got there 'with (only) minutes/seconds to spare'. [=he got there only minutes/seconds before he needed to; he got there just in time]
When they go on vacation, they 'spare no expense'. [=they do not worry about spending too much money; they spend a lot of money]
He said that he would 'spare no expense' [=he would spend as much money as necessary] to make the restaurant successful.
(..) Under their thumb, killing your people? S-Sometimes we don't get to choose what our life looks like. Sometimes, Ricky, you have to count the blessings you have. How many people can we spare? How many people here can fight? "We"? I don't even know how many people we have, Margaret. (..)2017 TvShow: The Walking Dead Title: Rock in the Road Season: 7 Episode 9