If someone can truly afford to "sponsor" you, they will not need you to pay for anything.
Think about it, if they can afford to give you $12,000 ... why would they need $80 from you????
All these "deals" are is buying membership into a discount club (just like Sam's Club or BJ's).
You are paying for a discount.
I have several sponsors and I assure you they do not ask me for money ... quite the other way around.
Companies sponsor you to get their name out there ... Pepsi wants to sell more soda, Falken wants to sell mroe tires, etc ...
What product are they offering that they want to get their name out there for??
Their "product" is your $80-$90.