Zapf dolls

We have 2 zapf dolls bought in Germany between 1994 and 1996. They are both in excellent condition besides the conversation is not there anymore with Bonnie who only says hallo and laughs. Selina the walking doll only has one disc left and I’m not sure if it works. I don’t think she walks properly anymore either. Her shoes still have the metal plates in them. They are not for sale but does may one know what the value would be? Bonnie has a sock missing and selina doesn’t have socks and the ribbon ties are not original.