I suspect it to be due to new users or "switchers" who have gotten the Apple bug like a new religion, who want a partner for their new MacBook/ iMac/ iWhatever, and who see one of the early Compacts as fitting that special need. So they've discovered that they have a Jobs-shaped void that only a 128k Mac can fill ... on that shelf in the corner.

It surely CAN'T be people who have "kept the faith" with Apple throughout, because they would surely know that those things just 'ain't worth the money.