Knowledge: An average dinner out in South Korea for one person costs about $8, which is $20 cheaper than in the USA. On the other hand, the average cost of professional hair dyeing in Copenhagen is about $30, which is very affordable.

Conversation:
Right now I have bright purple hair!
Nice! Did you change your hair color by dyeing it?
Yes, I had it professionally done.
I know that you can do it at home independently. Have you tried that before?
I have done that in the past but I didn't want to mess it up.
That makes sense. Did you have a specific reason for dyeing your hair? I know people do it to cover gray or white hair. or to just make their hair more fashionable.
I was tired of the same old blonde.
Ah, okay. Well, in Copenhagen hair dyeing is very popular. About 75% of women do it, and 18% of men.
Oh wow! that is a lot. Do you know how much hair dyeing costs in Copenhagen?

Response: Oh yeah, the average cost of professional hair dyeing in Copenhagen is about USD 30.