Are Duty Free shops a scam?

Get SECRET MAP with TIPS for Prague here http://patreon.com/honestguide 0:00 Opening 0:40 At the airport 1:41 Checking the prices 2:59 Wrong math? 3:33 Why are airports expensive? 4:30 Why is this store cheap? 4:55 Liquid limitations 5:33 Changes to the airport 6:48 Is it all an illusion? 7:06 Scams at airport? Honest Guide https://instagram.com/realhonestguide Janek https://instagram.com/janekrubes/ Honza https://instagram.com/honzamikulka/ Facebook https://www.facebook.com/HonestPragueGuide/ The music used in this video https://bit.ly/HonestMusic