I want to own a ford f450?

Well right now I'm 16 years old and I work with my dad with landscaping and there's this guy that owns a ford f450 king ranch and I just fell in love with the truck! And I was wondering how much is a ford f450 ranch king cost? I know it cost around $40k and up but I want a price that is around $20k or 25k and that'll be great. But you know I'm 16 right and I don't got a lisence, but I'm getting my lisence next summer and been thinking getting me a ford f450 as my first car. Do you think it's a good idea? Thanks

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