I think it will depend if they have been reproduced and if so, the quality of the reproduction. so price should be $200+. Both should be highly desirable. So the top end could be up there.
as for shipping, Look into how to ship paintings and framed art. generally, you need about 3" of foam and a wooden crate. Otherwise they are at risk of getting broken. ebay is probably a bad call as it will probably end in a damage claim.
hopefully you can find a local buyer and avoid shipping them. Maybe meet someone at an auction or video game show.