Through her method, one can "save about $40 on a one-way ticket to Bali".
The real trick, as she goes on to demonstrate, is to use the Skyscanner website that is hosted in the destination country. So rather than booking from skyscanner.com.sg if you're travelling to Bali from Singapore, one should head to skyscanner.co.id instead. In some cases, for example when attempting to book a flight to Bangkok on Oct 31, flights on skyscanner.co.th was actually more expensive , than on the Singapore-hosted site .