Even if they have to pay it themselves, they can still ask their parents to buy/order it for them and just give them the money. That's what I did at that age anyway because ordering them online is cheaper and you have more choice.

Shhh, don't tell the out of touch politicians that teenagers are not exactly known for their care about if something is against the rules or not.

It is more fun to watch them be shocked on TV when they can't explain why their ideas don't work.

Unfortunately, parents aren't always able to do their parenting very well and need their own guidance.