STOP WHAT YOU'RE DOING. THIS IS VERY IMPORTANT.
Today is the second day this month I find myself searching the internet for that whistle people do when something costs a bit of money. Why can't I find any Youtube clips of people doing it? HOW AM I MEANT TO RESPOND ACCORDINGLY TO PEOPLE ONLINE WHEN WE DISCUSS EXPENSIVE ITEMS?
Failing a clip, could you please demonstrate an adequate way of typing this sound.