Part of that is her case-packing too though. She's 1-per I believe. Her slave costume's one of those things too that I think a lot of people would buy that normally might not buy otherwise for on their computer desk or some such.
I've only seen her twice in the wild... Luke slightly more, Panno slightly more than that, then the Skiff Guards, then Nein Numb, and then Malikili is the "pegwarmer" who I see semi-routinely. From Panno to Leia though, those 3 I rarely see ever. I'd probably have 20 Panno's by now if I could find them in any quantity.