The cost price of Captain Q 700ml at CU convenience stores is...

The 700cc version was 3,900 won
I think the retail price is around 7,900 won..
I couldn't see it on the shelves, so I asked the owner if they had any in stock,
and I happened to,,, catch a glimpse of the monitor used for ordering products..
and 3,900 won was written there. The owner also,, said it was 3,900 won,
and of course, the retail price was also listed separately (on the monitor)