I guess this is mildly interesting but a few years ago on a whim someone was selling 2 boxes full of black wings for about 600 dollars,I think the estimate she gave me was about over 2000 pencils but I haven't tried counting

@Nagrolaz Weigh 1 of them. Then get a container and weigh that. Put all of them in the container. Weigh the full container. Subtract the weight of the container. Divide the weight that's left by the weight of 1 brush. Now you know how many you have without counting them individually.