There is a few things to concider which will either make the price higher or lower I am going by complete and electronics working. The Falcon has a few things that will make it's price high the Jedi training ball and arm, Motor works. All of the ships have noise and/or lights. The prices I listed are prices I have either sold ships for or bought them. One thing to also remember any ship made in North America will be U.S. only you won't find a loose Canadian one as only the box it came in was different. Wanted to remind you in case the seller tries to say they are from Canada to get the price up
So with that in mind here are prices I would say are fair for fully complete working ships hope it helps.
-Darth vader Tie if everything is there and lights/sound works $100
-Tie Fighter $60 complete and works
-The Falcon I can see it's missing the radar dish if the Jedi Ball and arm are there and electronics work, a fair price would be $180
-Snow Speeder $40
-X-Wing $50 to $60