I am 16, I need some sort of credit card to shop online? (Read more in desc)?

Okay, so I am a collector and I will probably be buying an item that will range from 600-800 dollars. Thing is, I can't use my debit card online and I am too young to own a credit card. In addition, my mom will probably not let me use her credit card online and same goes for my dad. What do I do? I can't buy prepaid cards, they don't work on paypal + they don't come in $ 600 options :P What dooo ii dooo!!?