Maybe the retired it early because it had a very good "price per part" for us, meaning % loss of profit per PoBB set for LEGO Corporation, had they priced it more.
During Black Friday, LEGO Store Greece and Moustakas Toys in Greece, had a deal that you could buy 2 LEGO sets and get the 2nd one for a 50% discount.
So, many people came into agreement (example through Facebook) to buy 2 sets of 10320 Eldorado Fortress and split the money they paid.
Ended up paying €161 each.
They did the same thing for 10305 Lion Knights' Castle.
I don't think anyone will get a better deal than this.
Great Job!
With every update, the ship looks better!
I think if you make the captain's cabin a little longer (add some windows, it will look more natural.
And maybe try add some protruding colored things above the captain's cabin windows (I don't know how they are called)