At 6' myself, I'd be happy of just enjoying PE and not having spent $900 for what is still a half night sleep (7hrs - taxi time - announcements - meal service - landing/take off = 5 hrs of sleep at most)

LAX-Europe at 10hr+ ?...maybe I'd consider pulling the trigger at $900. PHL-LIS (a relatively short flight)? No.

Maybe at $500 or less. And everything is possible. Nobody here has a crystal ball here to tell you whether the offer will drop to $500. IMO, they won't as $900 is already a discount compared to the original $1800.

YMMV