Need Help Finding Replacement Casablanca Trackball?

Here is another question I received recently from a member of the Casablanca community -- you'll find a treasure trove of additional tips, tutorials and answers like this on my website at www.CasablancaExpert.com

QUESTION: Chet, I have need to replace the Logitech trackball that came with my Casablanca editor and I am having a difficult time finding one -- any ideas where I might locate a replacement?

ANSWER: First I had to confirm the specific model and found this is called a 'Logitech TrackMan Marble'.

I did a little digging around and discovered that you can find that specific Logitech model from the Google online store here