The logic is that I'm 90% sure you're right, but 10% sure you're wrong, and that 10% is worth the $300 in sunk cost to me.
I'm 90% sure your prediction of an event 2 years in the future is right, and am willing to dust $300 to hedge.
Hell, even a 2 week earlier delivery is worth more than $0 to me.
You’re maths proficiency is far greater than mine Also you already have an S you lucky bugger! We just have to envy yours for the next 19 months.