That's a really nice bike. Are you buying or selling?
As cheap as I can get em! Seriously I would think that $250 range would be about right. Please bear in mind that is based on just your generalized photos plus no description. It could be worth more to some, it could be worth less. And that this is only my opinion based on my purchases. With that in mind, good luck.
I had that bike in 1974/1975! WHERE DID YOU FIND IT?!? no, wait ... that one has the original crank, I put a Bendix internal gear 3 speed crank ... must be a sister ship to the one I had.
I paid something like $10 maybe $15 for the bike, another $30 or so for the 3 speed crank. I am 99.98% sure the bike is worth a lot more than that these days.
"Whenever I see an adult riding a bicycle, I know there is hope for mankind." (H. G. Wells)