Ask Daddy
We know that not every kid born into wealth is a spoiled brat, but you have to admit that not going through financial struggles in your youth can cause you to underappreciate the value of a dollar. It’s nice that your dad can buy you whatever your heart desires, but please understand that the rest of us—the 99%–don’t have rich parents.
£500 is quite a large sum of money, even if you have to spend it on a necessity for work. To the rich kid’s credit, he didn’t understand how much the OP struggled before simply asking why couldn’t their parents buy them a new scuba tank? Hopefully, this brief exchange was an eye-opener for the kid.