So, they were raised to know the difference between right and wrong and also can think on their own?
What if they think that something you told them was "wrong" is in fact "right"?
I have three kids, and for reference i am strongly against these "in app" purchases which target kids because of this exact problem. My kids have androids and use their own account which doesnt have a CC card so they cant buy anything. Flip side, it is somewhat annoying when they get a game advertised as "free" only to be constantly hounded for "in app" purchases. More annoying when said "in app" purchase bait-n-switch game stated it was age appropriate when clearly it is not.
Not sure about your country, but this probably holds true in yours as well....
"Generally, minors cannot be bound to contracts because they are not old enough to enter them. In many cases, if someone does enter a contract with a minor, the minor has the ability to have the contract deemed void. On the other hand, if an adult breaches a contract with a minor, the minor can hold him liable."
How does a child agree to make an in-app purchase when they have a legal right to have it become void? Heck, even the "agreement" they "signed" to use the device is probably not legally binding in the first place. (NOTE: IANAL)
This smells of false advertising, and i suspect if a bricks and mortar company did this they would be in court facing "bait and switch" charges.