How can I get enough money to get a go kart?

Well I'm 13 and really into Go Karting and my best friend is too and he is getting a 10,000 dollar go kart from Sydney and I want to buy a go kart aswell and I want to buy a kart from Melbourne I thi k that a 10,000 dollar go kart is just as good as a 3,000 or 4,000 dollar jkart at the moment I mow peoples lawns and collect and sell aluminum cans is there any other way I can make money so I can buy a kart but I don't want to do anything online