The seller has also completed bids for Phi Mu stuff...
Sounds sorta fishy to me! Personally I'm appauled that they're asking for $200 - it's not new and most likely not an heirloom! I have a sneeky suspision someone is trying to play off the heart-strings of Chi Omegas. If my grandmother died, and she were in a sorority and I didn't pledge it, I'd still keep her pin - OR donate it (if it does in fact MEAN SO MUCH TO HER).
Buyers Beware!