I just acquired my third chalky Breyer, and second I've found in the wild. Coincidentally, both of the wild ones have been Donkeys, and both from the same estate auction place.
Donkey B was an accident, he was in a bunch of toys, in the background of the photo, and I bid on a whim because the lot was going pretty low. I was happy to have the donkey at that price anyway, and even happier when I picked everything up, unpacked them, and he turned out to be a green plastic Donkey in pretty good shape.
There were some other goodies in the lot (it was a large lot), including a nice large Dala horse.
Not included in the photos yet - Touch of Class and the chestnut QH Yearling in really good condition, a glossy alabaster Shetland missing half an ear, a dozen or so Stablemates in various conditions, and other odds and ends of Funrise, Safari, Schleich, a Nylint, a painted Craft House Arabian, and some unmarked, unidentified critters.