Could these be the new London Hospital frenzy? There seems to be a bit of an influx of them at the moment!
Frenzy is not generally a word in my vocabulary! As all are from different sources it is probably that two bidders wanted the same badge originally and it got bid up to to £99.Other owners of the same badge saw that and thought"I'll have some of that!" and put theirs on(only to find that it takes at least two bidders to start a bidding war).Patience is a virtue(that I sometimes possess) and sometimes "Good things come to those who wait"(Alas also sometimes they don't)......