Lets say hypothetically. I have 150 the discarded magical blue grundo plushie of prosperity stamps. What would be the easiest way to get rid of them all?
IMHO, either offer a lower price than usual to sell them quickly one at a time, or offer a discount on bulk and let people buy them. Obviously, if you have a lot, it will drive down the price because there's no scarcity. It's tough, but hopefully you find a buyer. Good luck!