maybe he's a rich douche and expects them to break a hundred
You never played GTA, right?
He can give a back (some) of the amount of that 100kr.
Depends on what the value of the currency is... There are a lot of countries where 100 of their currency is not that much (Turkey for example?)
To be fair that is quite the ice cream cone
And they are all happy about it
Maybe Lego City uses a currency without cents, like Yen
North America where they look at you funny when you pay with a hundred. Tried to buy batteries with a hundred. They acted like I was a counterfeiter at 17.