In 70-80s, Californina house finance rate reached its highest point at14%, the rate hit the bottom at 6% in the 90-02s. The bankers persuade people to refinance their house, they make money from charging 1-2% on top of the loan.
"Have money to burn". In United States, it was very popular in Real Estates when the house price was high and the finance rate drops. The bankers alway said " even you have money to burn, but refinancing your house will save you thousands of dollars, you have nothing to loose."
Have money to burn, it is not just the literal meaning, it is the fact that some people have already put into application.