But I will say skateboards, esp the good ones arent cheap.
Lucky for me skateboards, not cars, not pimp jewlery or any other materialistic object have been my most prized possession for the majority of my life. They are simple and easily replaced. I think they're only expensive if you don't weed through the hype. There's few reasons to spend more than a $100 on a complete that'll last about as long as a surfboard given the same amount of use.
Any pursuit that gives you the feeling of progression is a worthy one even if it's scooting. We just hope that they would graduate to a more worthy pursuit that will take them to a higher order of progression.
Just FYI IMO TIC Rock Climbing is probably higher up there progressionwise then surfing and skateboarding. I tried but I can't handle it so I stick with what I know.
I do have to say that there is an extremely materialistic culture associated with ski resorts, but you just have to weed through the hype just like with skating and more so surfing.