Is offline duty-free shops expensive compared to the Internet?

pu1. It's expensive, but not that much

2018-05-30

OK

pu2. If it's a product that doesn't use reserves, there's not much difference

2018-05-30

OK

pu3. If you use the prepaid card event well, you can buy it at a similar discount, so look this way!

2018-05-30

OK