I don't have the money to pay for it myself, but these two popped up within the first page of items when you search Delta Zeta online. And it breaks my heart that someone would sell their sisterhood like that.
I learned at Region Weekend that you are not allowed to sell your pin, if you die you may either be buried with it or it needs to be sent back to nationals but others may not have it (there may be an exception if your daughter is a DZ and you want to give it to her, but not sure).
after finding more and more, I narrowed my search.
Here is a link to the twelve badges currently for sale on EBay.