So I looked and found that a lot of people want the Anne of Green Gables books, well I have all eight listed and yet no interest....does a different ISBN really make a whole lot of difference?  I have a lot of WLed books, they just have different ISBN numbers and apparently no interest.  It's frusterating especially since I have to get rid of books to get more.  Does ISBN make all the difference?

They probably want the hardcover editions of the Anne books. Although I have all the others, I'm always looking at thrift stores for the hardcovers. I want to pass them on to my girls!

Yes it does.  Most of the WL are for other formats such as Hard Cover or Audio. A few had wishlisted versions of paperback so I tagged them with the ISBNs available in the system, but it does look like they produced a couple different lines of cover art so if someone is collecting a set they want to match, they may not want the versions available.

You could try offering a deal to try to move them. There are quite a few copies in the system of the versions you have.