(in the US) The one constant was that overwhelmingly older men and women were interested and impressed and had genuine questions or compliments without making jokes.
The younger you got with males, the more aggressive and posturing the questions and behavior. Younger females were non-memorable - mainly just looked or ignored. Pre-teen, kids of both genders are just curious.
There's a definite similarity in the behaviors of people as they get older and the very young in how they approach new and interesting things like a (e)unicycle. As people get older they seemed to lose all need to posture and prove themselves and they seemed more comfortable exposing the vulnerability of being curious and ignorant.
Men absolutely love to ask the cost.