Two other key websites:
("The Cage" photographs
Star Trek History
("The Cage" page
November 27 - December 18, 1964 (16 days)
$615,781.56 ($4,629,664.27 in 2013 dollars)
This was the most expensive episode of the original Star Trek
. For the most part, I think it shows up on screen, and it looks terrific. I prefer the more colorful cinematography that would characterize the series going forward, but the grayer aesthetic of the first pilot has its virtues.