Anyone knows how much I should take for them?

[Grüner Pfeil]

I have my Star Wars collection for sale. I have no price in because I wanted offers from interested people. But I think those offers aren't really realistic.
What do you think a realistic price is? Thank you for your help.

https://www.ebay-kleinanzeigen.de/s-anzeige/kenner-star-wars-krieg-der-sterne-70er-1977-general-mills-gmfgi/438087120-23-416?ref=myads