How to pay when you buy a card without interest

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I'm going to buy a laptop without interest, but I've never bought it without interest for 12 months.

For example, if I cut off a 1.2 million won laptop without interest for 12 months, is it 100,000 won per month?

Or are there other taxes or fees that you can't see?

Or is there a disadvantage compared to a lump sum payment if it is interest-free?

  238 4   8 years ago